ALBERT

Beschreibung: In Sweden Erlandsson (1942) showed that the species Parnassia palustris L. has two chromosome numbers, 2n = 18 and 2n = 36. Rozanova (1940) found the same numbers in plants collected in the U.S.S.R. Some morphological differences could be demonstrated in the Swedish material (Erlandsson, 1942). This was confirmed by Löve and Löve (1944) and, therefore, these authors (1950) distinguish 2 species: the diploid Parnassia palustris L. em. Löve and the tetraploid Parnassia obtusiflora Rupr. em. Löve, also separated by sterility barriers and by their geographical distribution. In the Netherlands a tetraploid population was found by Gadella and Kliphuis (1963). As the tetraploid population occurs in an area situated far south of the circumpolar distribution area of the tetraploid plants, it seemed worthwhile to determine the chromosome numbers of other plants of Parnassia palustris L. growing in the Netherlands.

Beschreibung: Les systèmes radiculaires des espèces des prés salés du Juncion maritimi ont été étudiés. Nous avons distingué six types morphologiques principaux d’enracinement. Les particularités des différents types et espèces ont été décrites et dessinées. La répartition des différents types d’enracinement dans le Junco-Triglochinetum et le Caricetum divisae a été interprétée écologiquement. Les racines de nombreuses espèces du Juncion maritimi sont pourvues de lacunes aérifères. C’est une adaptation au niveau élevé de la nappe phréatique. La résistance mécanique du sol a également une influence sur le système radiculaire. La concurrence des systèmes radiculaires a été discutée. On a essayé de différencier les groupements végétaux par leurs types d’enracinement. Je tiens à remercier M. J. Braun-Blanquet, directeur de la Station Internationale de Géobotanique Méditerranéenne et Alpine à Montpellier, de son aide et de l’intérêt stimulant qu’il a porté à mon travail, et M. J.-M. Betsch de son conseil. Les subventions de la Koninklijke Nederlandse Akademie van Wetenschappen (Montpellier fonds) et du Utrechts Universiteitsfonds m’ont facilité le séjour à la Station et rendu possible ces recherches.

Beschreibung: These small structures in nerve axils at the underside of leaves have given food to various theories and have been nonetheless in phytographic and taxonomic neglect almost from the beginning. That was in 1887, when the Swede A.N. Lundstroem published an extensive paper, in which he explained domatia as structures intended to accommodate mites – hence the word acarodomatia – which latter would in turn benefit the plant by cleansing the leaves from fungus spores. Lundstroem arrived at this hypothesis on the strength of ideas current in that time, about the existence of symbiotic relations between ants and plants; it was in the heydays of teleology. A closer investigation left little of the illusions about mutual benefit between ants and plants, but such critical interest was never focused on the supposed relation between mites and plants. Recently I could grow a few domatia-bearing species under acari-free conditions; the plants with their domatia did as well as in the open. Yet it is hard to prove that Lundstroem was wrong, but a combination of the experiment, the wellknown fact that domatia are inhabited by acari as often as not, and the origin of the hypothesis make if very unlikely that mites will creep into domatia for other reasons than a natural preference for shelter in small holes. All other (physiological) explanations are unconvincing, too, and so for the time being an explanation is lacking – provided that such an explanation would be necessary.

Beschreibung: Dr. P. S. Ashton of Kuching went on leave at the end of September 1965, to return mid-1966. In Europe he hopes to consult some Herbaria for type materials of Dipterocarpaceae. Mr. M. M. J. van Balgooy of the Rijksherbarium travelled in New Guinea, Australia, Lord Howe Island, and Java, from 30 March to 14 August 1965.

Beschreibung: Diagrams drawn after electron-micrographs of the spore formation in Phoma spp. are shown. The manner in which the spores are formed, called here the ‘monopolar repetitive budding process’, is discussed.

Beschreibung: Attention is drawn to the fact that the development of ascostromatic fungi is so diverse that it is possible to recognize a number of differently organized groups. Some of these groups correspond to the developmental types recognized by Luttrell but it is also shown that his Pleospora-type is not homogeneous, comprising as it does a number of categories, each of which has its own type of development of the ascocarp. To designate structures not indicated before, the new terms tichus, cataphysis, and tinophysis are introduced.

Beschreibung: This note is the result of a preliminary investigation made in the summer of 1964. During that season the author visited the coal-mine ”Villoria” of ”Cementos Fradera S.A.” (Asturias, Spain) in order to collect specimens of Carboniferous ostracodes. Two new species of Hollinella were found and are being described in this article. Besides it turned out that, at least in this coal-mine, the marine bed from which the fossils were collected directly overlies one of the two productive zones in the mine. Wherever the marine bed is present it could serve as an aid in determining one’s position in the local stratigraphic sequence.

Beschreibung: In a C 14 dated pollen diagram from ”Cienaga del Visitador” (ca 6°8’N; 72°47’ W) in the Colombian Eastern Cordillera the zones Ib + Ic + II (including the Allerød and Bølling interstadials) form one fluctuation in the diagram, as the short cold zone Ic is not reflected. An earlier Late-glacial interstadial is recognized and is called Susacá-interstadial. It probably lasted from about 13900 to 13100 B.P., was colder than the Bølling-interstadial, and is probably reflected in pollen diagrams from other parts of the world. The Holocene part of the diagram shows very high Gramineae-percentages, apparently due to a considerable lowering of the ”tree-line”. This must have been caused by the fact that the Holocene local climate has been much drier than the Late-glacial, even dominating the effect of the increase of temperature on the tree-line. The pollen zonation is nevertheless rather clear, and directly comparable with that from the Sierra Nevada del Cocuy and other areas. The contemporaneity of the Colombian and European pollen zones, strongly suggested or proved by earlier partly-dated diagrams, seems to be fully confirmed by the present one.

Beschreibung: In the southern slopes of the Cantabrian mountains (prov. León NW Spain) a miogeosynclinal and non-metamorphic series, 2—3 km thick, of Precambrian to Carboniferous age has been studied. Four main stratigraphic and tectonic units have been recognized: 1. Northern fracture zone of Las Salas, 2. Autochthone of Valdoré, 3. Esla nappe, 4. Western-Bernesga thrust structures. Expression of the Caledonian orogeny is very vague. The rocks have been subjected to tectonic forces during the Hercynian and Alpine orogenies. Epeirogenic movements during the Devonian (Bretonic phase of Stille) preceded large scale folding and thrusting during the early Westphalian (Sudetic phase). During this time the rocks of the Esla nappe have travelled a distance of 15—20 km to the north and northeast. It is suggested, that folding and thrusting happened simultaneously in different parts of the area. Further it is shown that basement configuration as expressed in facies boundaries played an important role putting limits to the rather thin thrust sheet during its movement. Fundamental weakness zones border the thrusted area. The Asturian phase of Stille may be held responsible for a great amount of refolding of the previously- formed thrust structures. To the north of the thrusting boundary i.e. fracture zone of Las Salas otherwise León line of de Sitter (1962 b), Westphalian deposits are found resting unconformably on rocks, that are represented in the nappe. So in the north and in front of the thrusts deposition went on during „middle” and upper Carboniferous times. Stephanian coal bearing rocks in the northern fracture zone are unconformably resting on both the Westphalian and the Older Palaeozoic thrusted series. Likewise Stephanian rocks of the Sabero basin in the south fill a depression in the nappe. This depression also occurs on a fundamental zone of weakness, the Sabero-Gordon line. From several locations it is inferred, that the tectonic forces, which folded the Stephanian rocks severely, left the older Palaeozoic, Sudetic and Asturian folded,rocks practically unaltered. The southern border zone is seen as an Alpine flexure zone; in places the Cretaceous steeply covers the previously mentioned series. Morphogenetic uplift of the chain most probably is accounted for by the Pyrenean phase. The Tertiary conglomerates of the Duero basin are to be derived from this uplift. It is held, that none of the mentioned unconformable rocks have covered the older Palaeozoic thrust series as full and uninterrupted blankets. The basin configuration of the Cambrian as described by Lotze 1961 is supported by stratigraphic and tectonic observations in the area. Thus Lotze’s Cambro-Ordovician geosyncline may have been tectonised as late as the Devonian—Lower Carboniferous. De Sitter’s view, that the thrustsheets contained in the Leonides moved from south (center of preceding basin) to north is confirmed by stratigraphic and tectonic evidence. In the east-west striking part of the Asturian—Cantabrian chain only the miogeosynclinal part of the greater subsidence is disclosed to our inquiry, the orthogeosynclinal development was not uplifted.

Beschreibung: La structure microscopique du test de quelques Spirifères dévoniens espagnols a été étudiée. Il se trouve qu’on peut distinguer différentes couches: la couche de King extérieure, granuleuse, comparable au ”primary layer” de Williams; la couche prismatique aux prismes obliques (= fibrotest s.s. de Vandercammen); le myotest aux points d’attache des muscles, et la couche mediane, le médiotest, dans les lamelles dentaires. Le myotest et le médiotest forment donc le prismotest de Vandercammen. Les lamelles de croissance ont été classées en trois types dont les lamelles libres sont les plus remarquables. Celles-ci sont dues à un arrêt de croissance et à une rétraction palléale, de sorte que le manteau s’est détaché de la couche granuleuse et aussi de la couche prismatique (= fibrotest s.s.). Des épines marginales massives ont été trouvées dans Hysterolites spec; il pourrait y avoir un rapport entre les épines et les soies sensorielles. De la position du deltidium on peut conclure que la jonction entre l’épithélium coquillier et l’épithélium pédonculaire se trouve à l’extérieur des deux rainures deltidiales. Probablement la plaque delthyriale n’est pas vraiment l’homologue du col pédonculaire des Brachipodes récents. Les cavités glénoïdes se forment entre les crura et les deux bords de l’aréa dorsale. Elles s’étendent dans un sens parallèle au plan médian. Des extensions secondaires à partir des bases crurales et du fond de la valve dorsale, peuvent produire des plaques apicales dorsales, à savoir les plaques crurales. Le brachidium s’agrandit par sécrétion calcaire d’une part et par résorption d’autre part.

Beschreibung: During an extensive investigation on Upper Jurassic and Lower Cretaceous pollen and spores we were able to make a detailed study of Classopollis (Pflug 1953) Pocock & Jansonius 1961. The basic material for our study consisted of a boring section in the East of Holland, that was very kindly placed to the disposal of Dr. Th. van der Hammen, head of the Palynological Laboratory, by the N.V. Nederlandsche Aardolie Maatschappij (N.A.M.) in Oldenzaal. The grains of Classopollis form an interesting object of inquiry because of the complexity of features to be observed on these grains. All that has been published about Classopollis before has been insufficient for any comparison with new material, both concerning the descriptions and the illustrations. It was the outstanding publication of Pocock and Jansonius (1961), that contained detailed and complete descriptions of some Classopollis species which permitted us to make a comparison with the Dutch Classopollis grains.

Beschreibung: This study of the calcareous algae in the limestone deposits of the two formations (San Emiliano and Lois-Ciguera) in NW Spain is based on field observations and microscopical study. It was possible in the field to divide almost all the limestone members into smaller units on the basis of physical, chemical and biological composition of the rocks. After studying the organic content of the rocks, it appeared that there was a close connection between their lithological and biological composition. With these aspects known, it became a fact that units with a given composition alternated in a regular sequence. This offered the possibility of recognising a cyclical sedimentation within a single limestone member. Considering the special properties of the cyclical sedimentation, such as the fact that it is only found in CaCO3 containing layers and the small size of the cycles, the name minor cycle has been suggested for such deposits. Two facies types can be distinguished: (1) originating in a quiet milieu, and (2) facies originating in a disturbed milieu (these were called limestone facies type A and limestone facies type B, respectively). It is typical of the limestones which were deposited in facies type A, that, amongst other properties, they have very little terrigenous material in their matrix, while those of facies type B contain large quantities in their matrix. A mixture between the two facies types was also observed and called facies type AB. The microscopical study was aimed to investigate: 1. the characteristics of the limestone construction, 2. the quantitative composition of the fauna and flora over the whole area; in a member in a minor cycle, and in a bed, 3. certain environmental changes, which affected the composition of the organic material. A detailed study has shown that two types of limestone are present, with respect to origin, manner of accumulation, and texture. These are skeletal and fragmental limestones. The skeletal limestones can occur as reefs and as banks. Proportionately, there are as many banks as fragmental limestones, and fewer reef limestones. It became clear, from the quantitative analysis, that the algae were by far the most important rock builders. Brachiopods, Foraminifera, corals, and gastropods also form a considerable fraction. There are fewer bryozoans, trilobites and ostracods present in detectable numbers. In the qualitative analysis, various associations of organisms were found, which must be considered as constant associations. It has thus been established that associations of, gastropods with red algae (mainly specimens of the genus Archaeolithophyllum), brachiopods with bryozoans and echinoderms, corals with blue green algae, Foraminifera with algae and echinoderms, are often found. On the other hand, gastropods are found with brachiopods and bryozoans, Foraminifera with brachiopods and bryozoans, and calcareous algae with brachiopods and bryozoans, can be considered as less frequent associations. An exception is the association of brachiopods with gastropods and red algae, in oolitic beds. These elements, however, lived in a special environment and this resulted in an exceptional composition of dwarf elements. Sometimes, clear changes could be seen in the composition of the flora and fauna within a bed. These changes can be qualitative and quantitative. It is noticeable, in most echinoderm beds, that the percentage of brachiopod fragments increases from the bottom to the top. The composition of other beds also shows such changes with other types of organic remains. The algal beds can generally be divided into three parts, on the basis of their biofraction composition. This can be explained by changes in one or more of the environmental components. Until now, no attention has been paid to a study of the rich algal flora in the Carboniferous deposits of NW Spain. 21 genera (4 new) and 26 species (15 new ones) have now been described. There are 8 species (7 genera) of red algae, 15 species (11 genera) of green algae, and 3 species of blue-green algae. The systematic position of the red algae, which are found in the area, has not yet been fully determined, thus two newly described genera Amorfia and Pseudokomia have been placed in the first group — according to Johnson's usage the ”Red algae of uncertain affinities”, together with the genera Cuneiphycus, Komia, Archaeolithophyllum, Petschoria, and Ungdarella. Three new species of red algae are described: Archaeolithophyllum johnsoni, Amorfia jalinki, and Pseudokomia cansecoensis. The largest proportion of the green algae belong to the family Dasycladaceae, 11 species (8 genera) are described in the present work, nine of these being new. These are Beresella hermineae, Epimastopora bodoniensis, Epimastopora rolloensis, Epimastopora sp., Macroporella ginkeli, Mellporella beundermani, Mellporella anthracoporella – formis, Uraloporella sieswerdai, and Zaporella cantabriensis. The new genera are Mellporella and Zaporella. 4 new species of the family Codiacea are described (3 genera), 3 of these species are new: Donezella lunaensis, Eugonophyllum mulderi, and Ortonella myrae. Strong arguments, on the basis of algal body construction, were found for placing the new species, Donezella lunaensis, in the family Codiaceae. The blue-green algae could not be specifically determined because of their generally poorly preserved structures. Of these, Girvanella sp., Osagia sp., and Pycnostroma sp., were described.

Beschreibung: Geology and soils in general Surinam is situated at the northern edge of the very old and stable Guiana shield. Six-sevenths of the country’s surface are occupied by formations belonging to the shield and designated together as the basal complex. However, the Roraima formation does not belong to the complex. It was deposited during the Mesozoic (probably the Cretaceous) as a thick layer mainly consisting of sandstone that covered the greater part of the shield. Later on the original sandstone plateau was dissected, a process accelerated by the uplifting of the shield, and finally it disappeared almost completely by erosion. The former surface is now only represented by the flat tops of some table-mountains one of which is found in the interior of Surinam: Tafelberg. See Schols & Cohen (1953). The surface of the northern seventh part of the country is occupied by deposits of Quaternary age. In general may be distinguished (from the south to the north): 1) The Zanderij formation, consisting mainly of sands of continental origin; 2) the Coropina formation, comprising the “old coastal plain”; the main parts are (a) the so-called “schols”, i.e. the remnants of an old sea-clay plain, separated by filled-up tidal gullies, and (b) the remnants of the offshore bars that formerly separated the plain from the sea; 3) the Demerara formation, comprising the “young coastal plain”. See Van der Eyk (1954, 1957). Geological-pedological classification of the savannas Savannas are found on the basal complex, the Roraima, the Zanderij and the Coropina formation. Cohen & Van der Eyk (1953) classify them as follows: I Savannas of the Coropina formation 1. Watamalejo-type – on the offshore bars 2. Welgelegen-type – on the “schols” II Savannas of the Zanderij formation a. Kasipora-type – on dry bleached sand soils b. Zanderij-type – on wet bleached sand soils c. Coesewijne-type – on non-bleached soils III Savannas of the Roraima formation: Tafelberg-type IV Savannas of the basal complex 1. Paroe-type – on granitic soils 2. Bosland-type – on schist hills 3. Saban-pasi-type – on subgraywacke hills Savanna soils The climate is characterized by the sequence of a long rainy season (April-July), a long dry season (August-November), a short rainy season (December-January) and a short dry season (February-March). In connection with this periodicity the water-table in many places fluctuates strongly in the course of the year. During the dry seasons the upper layers of the savanna soils are always completely dry, except just after a shower. A soil is called very dry if even during the rainy seasons the upper layers are not influenced by the ground water. A very wet soil, however, at this period is covered by some cm of water; in addition it is characterized by many small hummocks, in Surinam called “kawfoetoes”, which are built up by worms and in which these animals are able to keep their heads above the water. Certain soils occur that in spite of deep watertables are wet, because an impermeable layer in the subsoil impedes drainage of the topsoil. Of course there is a scala between the extremes “very dry” and “very wet”. The texture of the upper layers ranges from bleached and slightly red sand to sandy and silty clay. Object of the investigation The flora and the vegetation of the northern Surinam savannas are the object of this investigation. These savannas do not only represent the types of the Zanderijand the Coropina-formation, but also the Bosland- and the Saban-pasi-type, for these two types are present on the basal complex only near its northern border. The following savannas have been studied. Welgelegen-type: the savannas of Bersaba and Vierkinderen, the Bigi-olo savanna near Hanover and the Fransina savanna near Welgelegen; Kasipora- and Zanderij-type: the white-sandy part of the Lobin savanna near Zanderij; Coesewijne-type: the loamy part of the Lobin savanna, the savanna Mimili Okili near Powaka, the Doti savanna near Wisawini and the Coesewijne savanna near Bigipoika; Saban-pasi-type: the Gros savanna and the De Jong Noord savanna. Data of some other authors pertaining to these and the other types have also been taken into account, some published (Lanjouw, 1936; Maguire c.s., 1948; Heyligers, 1963), some unpublished. The savannas present a marked diversity, among other things with regard to the structure of their vegetation. However, nearly all satisfy this definition: “A savanna (or a campo) is an area with a xeromorphic vegetation comprising an ecologically dominant ground layer consisting mainly of grasses, sometimes together with sedges, and with or without trees and/or shrubs either forming a more or less continuous layer, or in groups, or isolated.” The species have been studied with respect to the relation with the habitat, the means of dispersal and the area of distribution, all in mutual correlation. Vegetationunits have been distinguished and classified; ecological and chorologic aspects have been taken into account. A combination of all data, obtained during this as well as former investigations by others, permits the drawing of a provisional and general picture of the flora and the vegetation of the northern Surinam savannas as far as the present aspects are concerned. The following statements all apply to N. Surinam only, unless mentioned otherwise. Flora Habitat in general. Nearly all plants occurring on the savannas are heliophilous and are able to survive repeated burning. The flora of the open vegetation types consists of about 270 species the majority of which (72 %) is restricted to the open savannas. However, there are species occurring either in other open situations too, partly as weeds (8 %), or on wet savannas and other wet places (3 %), or in savanna rivulets and in swamps (7 %), or in savanna bushes (8 %). Out of ca. 100 species of the savanna bushes only 15 % are restricted to this vegetation type. The other species occur either also in the open savanna (20 %), or along forest borders (8 %), or in savanna wood and forest (23 %) and/or even in rain forest (31 %). A group of 12 % belonging to the last category does not flower or even not grow high in the bushes. Quite apart from this division other groups may be distinguished among the species of the bushes in the following way: occurring also in secondary forest (31 %) in marsh forest (9 %), in swamps (3 %). The trees and shrubs of the savannas support only few epiphytes and (half-) parasites; these belong to 19 different species. In the field nearly all species show some (factual) range with regard to the degree of moistness and the texture of the soil. The texture itself is not necessarily the decisive factor as there is a relation between the texture and some other properties of the soil, e.g. the consistency and the mineral content. This has not been further investigated. The same holds for the species preferring slightly shaded localities. These spots have a microclimate that differs more from that of its surroundings than in light intensity only. The majority of the open-savanna species have diaspores that are not obviously adapted to any agent of dispersal (71 %). The remaining 29 % are distributed over 6 different categories. The diaspores of the species of the bushes belong partly to the non-adapted forms too (35 %), but 50 % of them are fleshy. Generally speaking, the savanna species have a wider geographic distribution than the spieces of the flora of Surinam as a whole. This is particularly true for the opensavanna species. On the basis of similar areas of distribution the species are classed under 6 geographic elements, viz. the Guianan (G), the northern South-American (N), the northern + eastern South-American (NE), the Middle- and northern + eastern South-American (MNE), the South-American (S) and the American element (A). The distribution of the species of the open-savanna vegetations and of the bushes, respectively, among the geographic elements is as follows (percentages): G 12 : 26; N 11: 18; NE 16 : 13; MNE 10 ; 3; S 9 : 18; A 42 : 22. It appears from a comparison of these figures too, that the species of the first group in general have a wider distribution. Apart from the geographic elements the Roraima element has been distinguished. It comprises all species collected on one or several of the table-mountains in the Guianan interior. The distribution of these species among the geographic elements does not differ considerably from the one of the savanna flora as a whole. It may have appeared already from the foregoing that the species of the bushes, though presenting a higher percentage of adapted diaspores, nevertheless do not have areas of distribution wider than those of the open-savanna species. The expected correlation is, however, apparent if the two groups are considered separately: the mean area of distribution of the species with adapted diaspores is wider than the one of those with non-adapted diaspores. A comparison of the ecological and the chorologic aspects brings to the fore two focal points within the savanna flora: The elements with a small distribution (G and N) are most numerously represented on wet to very wet sandy (in particular white-sandy) soils, whereas the elements with a wide distribution (MNE, S and A) are concentrated on dry and moist non-bleached sands and loams and on very wet soils and present a preference-top on dry and moist loamy sand. The Roraima species are by far the most numerous on the wet white sand, in general they are more numerous on wet than on dry soils. Vegetation Vegetation-units have been distinguished and classified according to the BraunBlanquel school. It has been attempted to make the groups of so-called characteristic and differential species correspond with ecological groups in the sense of Duvigneaud (1946, 1949). The latter consist of species with clear, sociological affinities between them because of similar habitat requirements. The open-savanna (and orchard-savanna) vegetation-types have been united into a single class which is defined and divided as follows: Class Leptocoryphio-Trachypogonetea. Principal species; Trachypogon plumosus, Leptocoryphium lanatum, Axonopus pulcher and Rhynchospora barbata. It seems likely that this class and its subdivision up to and including the alliances may be applied to the whole of Guiana. 1. Order Trachypogonetalia plumosi. Principal species: Trachypogon plumosus, Axonopus pulcher and Bulbostylis junciformis. On very dry to moist soils. 1.1. Alliance Cassio (ramosae)-Trachypogonion. Principal species: Axonopus pulcher Trachypogon plumosus, and Bulbostylis conifera. On white sands. There are 3 or 4 associations two of which occur on open patches between so-called muri-bushes (see B1). Distribution: Kasipora-type; Guiana and adjoining parts of Brazil. 1.2. Alliance Curatello-Trachypogonion. Among the many tens of species the most common ones are Trachypogon plumosus, Axonopus pulcher, Schizachyrium riedelii and Heliconia psitlacorum. Usually there is a thin layer of trees mainly consisting of Curalella americana, giving the vegetation the aspect of a type of so-called orchard savanna. A rather large part of the species occurs outside the savannas on other open spots too. The alliance occurs on pure reddish and on loamy sands. On the savannas of the Coesewijne- and the Welgelegen-type 5 associations are present. Similar vegetation types are found throughout Guiana, on the central Venezuelan llanos and far into E. Brazil. 1.3. Alliance Rhynchosporo (barbatae) – Trachvpogonion. Principal species: Axonopus pulcher, Leptocoryphium lanatum, Mesosetum cayennense, Bulbostylis conifera and Rhynchospora barbata var. barbata. On sandy (clay) loam. Two associations on savannas of the Coesewijne-type; they are related to vegetation types in French Guiana and in regions farther to the west, up to the Venezuelan llanos and some of the West Indian Islands. 2. Order Paspaletalia pulchelli. Leptocoryphium lanatum is the only species which is common in all communities of this order. In general the vegetations are not closed. On wet (or even very wet) soils. 2.1. Alliance Syngonantho-Xyridion. Principal species: Paspalum pulchellum, Panicum micranthum, Rhynchospora barbata var. glabra, R. graminea, Xyris guianensis and Abolboda americana. On white sands, wet and very wet. Three associations are found on the savannas of the Zanderij- and the Watamalejo-type. Distribution: Guiana and adjoining parts of Brazil, also on the table-mountains of the Guianan highlands. 2.2. Alliance Bulbostylidion lanatae. Principal species: Trachvpogon plumosus, Paspalum pulchellum, Panicum micranthum, Mesosetum tenuifolium, Rhynchospora barbata var. barbata and R. rhizomatosa. On loamy sand and sandy loam; wet. In northern Surinam 5 associations occur on savannas of the Saban-pasi- and the Watamalejo-type. Distribution: Guiana, probably also on the table-mountains. 2.3. Alliance Imperato (brasiliensis)-Mesosetion (cayennensis). Principal species: Leptocoryphium lanatum, Mesosetum cayennense, Imperata brasiliensis, Rhynchospora barbata var. barbata and R. globosa. On wet sandy loam and heavier soil types. Four associations on savannas of the Coesewijne-, Welgelegen- and Saban-pasi-type. Related vegetation types occur, as far as known, only in regions more to the west, up to the llanos and Guatemala. 3. Order Panicelalia stenodis. Principal species: Leptocoryphium lanatum, Panicum nervosum, Hvpogynium virgatum, Heliconia psittacorum and Tibouchina aspera. On very wet soils, in savanna rivulets and small depressions. There are 2 alliances, both showing relationship with vegetation types occurring in regions more to the west, up to the llanos and some West Indian Islands. 3.1. Alliance Axonopodion chrysitis. Principal species: Leptocorvphium lanatum, Panicum nervosum, Rhynchospora globosa and Tibouchina aspera. On very wet soils of sandy loam and heavier. In N. Surinam 3 associations are found on savannas of the same types as alliance 2.3. 3.2. Alliance Mauritio-Hypogynion (virgati). Principal species: Hypogynium virgatum, Leptocoryphium lanatum, Panicum nervosum, Rhynchospora glauca, Heliconia psittacorum and Tibouchina aspera. Typical are the tall palms of Mauritia flexuosa. The alliance has rather many species in common with the communities of swamps, e.g. Blechnum indicum and Rhynchospora cyperoides. There are 3 associations, found in rivulets and depressions on savannas of all types. The different types of savanna-bushes are merely described. A classification on floristic grounds would be justified only if the savanna woods and forests were included in it too. B1. Ternstroemia-Matayba bushes. See Heyligers (1963). Principal species: Ternstroemia punctata, Clusia fockeana, Licania incana, Humiria balsamifera var. guianensis (“muri”), Pagamea capitata, Matayba opaca and Conomorpha magnoliifolia. On dry white sand. B2. Rapanea bushes. Principal species: Rapanea guianensis, Davilla aspera, Tapirira guianensis, Symplocos guianensis, Miconia rubiginosa, Byrsonima crassifolia, B. coccolobifolia and Curatella americana. On dry loamy sand and dry sandy loam. B3. Cupania bushes. Principal species: Cupania scrobiculata var. frondosa. Byrsonima crassifolia, Davilla aspera, Miconia ciliata, Maprounea guianensis, Symplocos guianensis Protium heptaphyllum, and Curatella americana. On moist loamy sand and moist sandy loam. B4. Clusia-Scleria bushes. See Heyligers (1963). Principal species: Licania incana, Clusia fockeana, Bactris campestris and Scleria pyramidalis. On wet white sand. B5. Marlierea bushes. Principal species: Marlierea montana, Bactris campestris and Licania incana. On wet loamy sand. B6. Roupala-Antonia bushes. Principal species: Roupala montana, Antonia ovata, Davilla aspera, Miconia ciliata, Bactris campestris, Licania incana, Humiria balsamifera div. var., Pagamea guianensis and Marlierea montana. On knolls of pebbles embedded in sandy loam; wet. Existence, origin and maintenance of the savannas There is no type of climate that accounts for a savanna vegetation irrespective of other conditions. However, a climate that permits the existence of savanna vegetations may be called a “savanna climate”. The latter is characterized by a certain difference between the precipitation in dry and wet seasons, independent of absolute values. The climate of northern Surinam is a savanna climate in this sense. A savanna vegetation is natural, i.e. determined edaphically, if the upper layer of the soil is alternately desiccated and saturated with water, thus in general in wet and very wet localities and in rivulets. As far as known the following savanna types and vegetation types are involved in this situation (the rivulets left out of consideration): Watamalejo (2.1) Welgelegen, partly (2.2), Zanderij (2.1 and B4), Saban-pasi (2.1 and B5, 2.2. and B6) and Bosland (?). A savanna vegetation occurs in dry localities only if fires prevent the formation of a closed layer of trees or shrubs. This is found among the following types: Welgelegen, partly (1.2 and 1.3), Coesewijne (1.2 and B2, 1.3 and B3) and Kasipora (1.1 and B1). Parts of the savannas of the Welgelegen-, Coesewijne- and Saban-pasi-type occupied now by vegetations of the Imperato-Mesosetion (2.3) and the Axonopodion chrysitis (3.1) would probably be overgrown very slowly by the surrounding forest and only starting from its edges if the fires were stopped. It might be easily assumed that savannas owing their maintenance at present only to deliberate burning, originated from forests as a result of human interference as well. However, the possibility may not be excluded that they came into existence very long ago, either caused by natural fires or in consequence of a water economy of the soil differing from the present one. Final conclusions All available data concerning the flora and the vegetation of the northern Surinam savannas justify the following theories: The wet white-sand savannas of the Zanderij-type have vegetation types (2.1) consisting of species that mainly stem from formerly or still existing savannas on the basal complex and on the Roraima formation, probably chiefly on the latter. These species may have reached the Zanderij formation either directly by means of series of savannas in the interior that still may have been present during the break-down of the Roraima plateau, or indirectly by the way of other sandy regions bordering the edges of the Guiana shield. The vegetations of the savannas belonging to the Saban-pasi-type on wet loamy sand and sandy loam (2.2) consist of species which already for a long time were common to the basal complex and the Roraima plateau or/and which originated from the plateau, and besides of species that developed on the basal complex or migrated from elsewhere to the subgraywacke-area. The savannas of the Watamalejo-type and of the Welgelegen-type N. of the Wane-creek have a flora that may be regarded as a selection from that of the two preceding types. The vegetation types on dry and moist, red, pure and loamy sands belonging to the Coesewijne- and the Welgelegen-type (1.2) have a high percentage of their species in common with the campos of central and eastern Brazil. It seems possible that these species came to N. Surinam from the campos. The species combination of the savanna vegetations from other habitats does not permit a conclusion with regard to their possible origin.

Beschreibung: A revision of the Euphorbiaceous genus Meineckia has resulted in the recognition of 19 species, with 7 subspecies and 2 varieties (for a total of 25 distinct taxa). Proposed as new are 5 species and 1 subspecies, while new combinations are necessary for 14 species and 6 subspecific taxa. The extraordinary confusion in the taxonomic history of the genus is illustrated by the fact that the 14 previously recognized species have been classified under 6 different generic names: Cluytiandra, Flueggea, Neopeltandra, Peltandra, Phyllanthus, and Securinega. As revised, the number of species represented in the different regions is as follows: America, 3; Africa and Arabia, 4; Madagascar, 8; India and Ceylon, 4. The genus appears to be of African origin and is probably most closely related to Zimmermannia.

Beschreibung: It is certainly nothing new to state that palm taxonomy is still in a rather poor condition, despite the work of so many specialists. Linnaeus (1753) in his Species Plantarum did not describe any American palm. Soon afterwards a few species were described, e.g. by Jacquin (1763), Gaertner (1788), and Humboldt, Bonpland & Kunth (1816), to mention only a few authors of species occurring in Suriname.

Beschreibung: De Marseille à la frontière espagnole s’étend le long de la Méditerranée une large plaine côtière. En arrière de la côte s’allonge une chaîne d’étangs saumâtres peu profonds, qui avaient autrefois une étendue beaucoup plus grande. Le comblement de ces étangs se poursuit (voir Braun-Blanquet et al., 1958). Autour des étangs, la végétation halophile, qui prend une grande extension, s’ordonne selon la salinité du sol. La succession de la végétation, à partir des étangs jusqu’au Populetum albae, passe par les associations suivantes: Suaedo-Salsoletum, Salicornietum fruticosae, Junco-Triglochinetum, Agropyro-Inuletum, Caricetum divisae, Agropyro-Trifolietum maritimi et Molinietum mediterraneum.

Beschreibung: Noona Dan Expedition. In April 1961 the Danish schooner Noona Dan with a staff of 19, three of them botanists, left Copenhagen to explore in the Philippines during August and September on Palawan, then for two weeks on Balabac, then for a month on Tawitawi; the last two weeks of the year were spent near Zamboanga in Mindanao. The first half of 1962 was spent in the Bismarck Archipelago. In the middle of August, the Solomon Islands were visited; in September-October the expedition members returned to the University of Copenhagen. About 5000 herbarium specimens were collected; especially during the last part of the expedition attention was paid to fungi (T. Wolff in Nature 198, 1963, 1044-1045).

Beschreibung: Ferns. At Kew, Dr. R. E. Holttum is continuing his work on the Thelypteris Group. Dr. K. U. Kramer of Utrecht concluded his revision of the Lindsaea Group for the Flora Malesiana, part of his world monograph. Isomeris is included in Lindsaea as a section.

Beschreibung: A revision of the genera Geoglossum, Microglossum, and Trichoglossum as represented by collections made in West Pakistan, India, Nepal, Sikkim, and Tibet is given. Several species from this area are recorded for the first time. Geoglossum glabrum, albeit not indigenous, is discussed and shown to be a nomen dubium; the name as used in the sense of Nannfeldt is replaced by G. sphagnophilum. The name Geoglossum nigritum is a misapplication, so that for it G. umbratile is re-introduced. Geoglossum umbratile var. heterosporum is a new combination.

Beschreibung: After a distinguished career as a collaborator of Prof. Hugo de Vries, the famous geneticist, Karel Bernard Boedijn (born June 29, 1893, at Amsterdam) became a mycologist, and it is in this latter capacity that he will be primarily remembered. He had already started to pay attention to the fungi during his Amsterdam period when C. van Overeem, Miss D. M. G. de Haas (who later married van Overeem), and Boedijn banded together and called themselves the “Mycologisch Museum te Weesp”. They started building up a collection which, however, never became very big. After some years van Overeem accepted a position in the Herbarium of the Botanic Gardens at Buitenzorg (now Bogor) in Java, where he died after a short but active period (1921-1927). The collections on liquid of the “Mycologisch Museum” are now at the ”Hugo de Vries-Laboratorium”, Amsterdam, while the dried material, taken to Java by van Overeem, will be found in the collections of Herbarium Bogoriense.

Beschreibung: The genus Hygrophorus is perhaps one of the most attractive among the genera of the Agaricales. It is surprising, therefore, that no full treatment of this genus in Europe has ever been published. Doubtless, European mycologists will be strongly stimulated by this American monograph in which 244 taxa are described and 116 illustrated by excellent black and white photographs. Of these 244 taxa, 41 are new to science: about 65 occur also in Europe. The European mycologist will be astonished by the strikingly high number of taxa in this monograph. The “Flore analytique” of Kühner & Romagnesi covers 80 species and varieties of Hygrophorus and there are 86 in the second edition of Moser’s “Die Röhrlinge, Blätter- und Bauchpilze”. Though the actual number of taxa of Hygrophorus in Europe may be much higher (Orton’s treatment of Hygrocybe in the “New check list of British Agarics and Boleti” is already an indication), it is not to be expected that Europe will have more than half as many species as North America.

Beschreibung: The petrography and the structural geology of some parts of the ”Hercynian” orogene of western Galicia is discussed. The oldest rocks are metasediments and orthogneisses which have some relic-structures of an older orogeny. The ”Hercynian” migmatization gave rise to a large series of anatectic granite formations. Three ”Hercynian” phases of deformation, all with a WSW-ENE-directed stress-field, have been distinguished. Younger wrench-faults are originated by the same stress-field. Some fabric analyses show that the first two phases have a sub-vertical, NNW-SSE-striking schistosity, each with a horizontal B-axis, and that the third phase has a vertical N-S-striking cleavage with a vertical B’-axis. The migmatization took place after the first phase.

Beschreibung: Fusulinid faunas from various locations spread throughout the Cantabrian mountains are described as belonging to about 180 species including 17 new species and 11 new subspecies of 18 genera. The latter are Staffella (with 3 new species), Parastaffella (with 3 new species and 2 new subspecies), Millerella, Ozawainella (with 2 new species), Pseudostaffella, Schubertella, Fusiella, Profusulinella (with 1 new species and 3 new subspecies), Aljutovella (with 1 new species), Hemifusulina, Beedeina (with 1 new species and 1 new subspecies), Verella, Eofusulina (with 1 new species), Fusulina (with 2 new species and 1 new subspecies), Hidaella (with 1 new subspecies), Fusulinella (with 3 new species and 3 new subspecies), Obsoletes and Protriticites. The faunas are closely comparable with those of the Eurasian continent, notably of Russia; not only in the species and genera but also in their chronological sequence. The assemblage zones have been subdivided into subzones and subdivisions: Assemblage Zones Protriticites Fusulinella Profusulinella Millerella Subzones B A B A Ps. antiqua Subdivisions B3 B2 B1 The subdivisions and subzones are considered to be only significant for this region where they have facilitated the correlation of many sections. These correlations have been almost invariably confirmed by Racz from his studies of algal floras, and have enabled a synthesis of the general sedimentary history of the Carboniferous Period here. The correlation of the NW European and Russian stages through the Donetz Basin, presented at Heerlen in 1958 is different from that derived from the Spanish floras and faunas. Despite shortcomings in some stratigraphic data the palaeontological identifications are valid and the difference in correlations must be considered significant. This forces the conclusion that some process possibly that of different rates of evolution, existed during this time.

Beschreibung: Four Upper Carboniferous limnic coal basins in the Cantabrian mountains are described. In the coal measures, which are known as the Cea formation and unconformably overlie the Older Palaeozoic, two sedimentary cycles are recognised. Accordingly, the unconformable sequence is subdivided into two members. The lower one, the Carrión member, starts with quartzite conglomerates and becomes gradually finer grained upwards. It yields anthracitic coal and upper Westphalian D floras. Its maximum thickness is 1200 m. The upper one, the Prado member, begins with limestone conglomerates and also grades to finer sediments upwards. It contains dry to fat coals and Stephanian A to B floras. Its maximum compiled thickness may be approximately 2500 m but a complete section is not found anywhere. The Cea formation shows onlap onto the Older Palaeozoic towards the west. The predominant structural trend in the Cea formation in the described area is east-west. A few structures with north-south axes were recognised in the Valderrueda and Ocejo basins. They are thought to have originated from differential compaction and to be the earliest structures of the Cea formation. The east-west structures are dominated by wide, asymmetric synclines, separated by narrow zones of disturbance instead of anticlines. They have originated as a secondary effect of block faulting in the underlying Older Palaeozoic formations. In the history of the Cea formation large east-west trending fundamental faults (terminology from de Sitter, 1956), probably separating basement blocks, play a dominant role in the deposition as well as in the deformation of the Cea rocks. Activity along these large east-west faults in the Older Palaeozoic rocks is proved to have continued intermittently from the upper Westphalian (and earlier, Rupke, 1965) to the middle Tertiary. Thus the deformation of the Cea deposits, which is dependent on the movement along these faults, must have been a long-lasting process and not a short-lived event like, for instance, the Permian Saalic phase, as was formerly believed.

Beschreibung: In a high Andean valley (6°N. Lat., alt. 3800 to 4400 m) four bodies of glacial drift marked by many end moraines are recognized. Stratigraphically related to the drifts are small bodies of lake sediments, from which core- and outcrop samples were taken. The samples yielded a continuous pollen sequence from which climatic history was derived. The pollen sequence is calibrated by nine C14 dates from organic material in the samples. The dated climatic history permits correlation of the sequence with both Colombian pollen zones and northern European zones. It also permits approximate dating of the drifts, which are in good chronologic agreement with those recognized in North America. The results therefore support the view that major climatic events in high-altitude, tropical South America during at least the last 12,000 years were synchronous with those in mid- and high-latitude North America and Europe.

Beschreibung: The Devonian and Carboniferous rock-sequence in the Cantabrian Mountains is developed in two different facies which are separated by an E-W tectonic line, the León Line, and called the Leonide and Palentian facies, respectively to the S and N. The Leonide facies is widely exposed throughout the Cantabrian Mountains and its tectonic history is now well known. The most complete sequence of the Palentian facies occurs in the present area, which lies across the boundaries of the provinces of Palcncia, León and Santander. Towards the west and north the Devonian and Lower Carboniferous gradually plunge below the younger strata. The Palentian facies in this region is only found north of a second fundamental tectonic feature, the SE-NW Cardaño Line. This line joins the León Line in the SE of the area near the village of Santibañez but can be traced far to the NW into the province of Oviedo. Immediately south of the Cardaño Line there is the Sicro basin filled with Upper Carboniferous elastics which even overlap in places the León Line further south. The pre-Westphalian rocks of the present area are limited to the north by the Peña Prieta Line, the fundamental nature of which is emphasised by a large granite intrusion. To the east the Polentinos fault separates the present area from the mainly Westphalian, Pisuerga basin. The fundamental lines are partly expressed at the surface as large fault systems. It is remarkable that in the Palentian facies sedimentation was not interrupted by the major erosional periods known from the Leonide facies. The post-Silurian and pre-Westphalian sequence of the Palentian facies is on average about 850 m thick and consists mainly of shales with thin limestone intervals. The corresponding sequence of the Leonide facies is on average about 1750 m thick and shows important, thick Devonian reef limestone intervals. Only the lower and uppermost of the Devonian contain clearly higher-energy deposits (sandstone sequences). Both the lithology and fossil association confirm that the Palentian facies sequences developed in a more offshore (middle to outer neritic) environment of deposition than indicated for the Leonide facies (littoral to inner neritic), Important epeirogenetic movements in the late Namurian and in the Westphalian disturbed the preceding long period of quiet sedimentation. Between the Cardaño Line to the south, the Peña Prieta Line to the north and the Polentinos fault to the east the Cardaño block was subjected to a regional tilting during the deposition of the rocks of the Yuso Group. The maximum uplift and erosion are indicated in the N and E whereas the deepest subsidence and maximum deposition have been detected in the S and W of the Cardaño block. The pre-Westphalian rocks, where unconformably overlain by those of the Yuso Group, show local, gentle, pre- or synsedimentary folded structures. The present study has not revealed pre-Westphalian structures that would justify the use of the term orogenic phase (i.e. Sudetic) for their origin. They are rather interpreted as the results of local compression accompanying pre- and synsedimentary epeirogenetic movements. The unconformable Yuso Group consists of a conglomerate facies — the Curavacas Formation — up to about 700 m thick and a sandstone-shale facies — the Lechada Formation — of at least 750 m N of Cardaño de Arriba (probably up to 2000 m to the W). The Westphalian rocks were deformed during the main compressive phase, which therefore is thought to correspond with the Asturian folding phase (pre-Stephanian). The tectonic transport here was from north to south in contrast to the Leonides where it was from south to north. This correlates with the theory that the folding of the two areas took place at different times; Asturian in the Asturides (Palentian facies) and Sudetic in the Leonides. The inhomogeneity of the Palentian facies rock sequence is reflected in the very complicated final tectonic picture. The Cardaño Area can be subdivided into 4 subareas (Northern, Central, Southern and Arauz), in each of which a different lithofacies is related with a corresponding minor tectofacies. Simultaneous cross folding can be related to the rapid facies changes in the affected rocks. The present area gives very instructive examples of the close interaction of tectonics and sedimentation. Epeirogenetic movements between fundamental tectonic lines controlled the deposition of the sedimentary sequence. These heterogeneous rocks were then acted upon by a relatively short compressive tectonic phase which created out of them the present architecture of the Cardaño Area.

Beschreibung: The Laguna de La Herrera (alt. ca 2550 m) is a lake situated on the western border of the Sabana de Bogotá, near Mosquera (dept. of Cundinamarca, Colombia) (fig. 2). This part of the Sabana has a relatively dry climate (appr. 600—700 mm rainfall), as it lies in the rain-shadow of the hills that border the Sabana on its western edge, and it bears therefore a xerophytic vegetation. The western slopes of the bordering mountains, that fall steeply to warmer valleys, have a much higher rainfall and are almost continuously clouded. They bear therefore a cloud-forest, of the Quercetum type, that reaches partly the very top of these mountains. Fig. 1 shows this in an idealized section. For further details on the mentioned vegetation-types, we may refer to van der Hammen & Gonzalez (1960). In the same publication the Geological history of the Sabana is shortly described, including the Quaternary history as a big lake with fluctuating water-level. Geological data on the area of Laguna de La Herrera were given in van der Hammen & Parada (1958). The present section of the pollen diagram corresponds approximately to bore-hole no. 19 of fig. 2 of that publication. The origin of the lake is probably (at least partly) due to fluvial erosion and sedimentation (old course of Rio Balsillas?). The lake sediments consist principally of diatom gyttja with intercalated layers of clay or peaty material. The base consists of hard greenish to white clay. We believe that this clay possibly corresponds to the altered clays that are exposed in the nearby hills, and which belong to much older eroded lake-sediments (see van der Hammen & Parada, 1958). The only other existing pollen diagram from the Holocene of the Sabana is from near Bogotá, near the eastern border of the Sabana (section CUX upper part, fig. 7 of van der Hammen & Gonzalez, 1960). Nevertheless, that diagram shows a completely different picture, reflecting a local vegetation (it is not from lake-sediments), under much more humid conditions (alternation of Alnetum and Myricetum). A direct comparison of the diagrams of Bogotá and La Herrera is therefore difficult.

Beschreibung: The Caldas Formation is introduced to denote a largely terrigenous sequence in the predominantly carbonate facies of the Leonesian basin in Upper Emsian and Lower Couvinian time. Some lithological and palaeontological details of the type section of the Caldas Formation are given. The Caldas Formation rests conformably on the La Vid Formation and is unconformably overlain by the Ermitage Formation.

Beschreibung: The Carboniferous Pisuerga basin developed north of the León line and as such is the most eastern one of the Asturide basins. The Carboniferous sequence is subdivided into Ruesga Group (roughly Lower Carboniferous + Namurian), Yuso Group (roughly Westphalian) and Cea Group (roughly Stephanian). Since the beginning of the Yuso Group the Pisuerga basin became subdivided into a western and eastern basin and since the beginning of the Cea Group the western basin became subdivided into two separate basins. The main folding started during the Stephanian. A remarkable interaction of epeirogenic and orogenic movements leads to the analysis of a close relation between sedimentological and structural features. Several pronounced structural lineaments can be traced to have been active since the Middle Devonian into the Tertiary.

Beschreibung: The first Paleocene pollen species of Colombia were described in van der Hammen (1954). One species was redescribed in van der Hammen (1956b). The associations of species and the climatic changes of the Paleocene were described and discussed in van der Hammen (1957a) and the palynological correlation of sediments of this age in van der Hammen (1957b).

Beschreibung: A continuous sequence of Devonian sediments is exposed in the northern part of the province of Palencia (NW-Spain), on the southern slope of the Cantabrian Mountains. This study concerns the stratigraphy and paleontology of the Lower Devonian formations. At the base of the sequence a clastic formation is found, called the Carazo Formation. This unit can be sub-divided into three members, from top to bottom: (c) alternating shales and sandstones, (b) quartzitic sandstones, partly strongly ferruginous, (a) shales and micaceous sandstones. Members a and b did not yield fossils. The upper part of the formation is richly fossiliferous. The main element of the fauna consists of brachiopods, which occur together with tentaculites, trilobites, ostracods, and pelecypods. The well-preserved and characteristic brachiopods are illustrated. The fauna indicates a Lower Gedinnian age for these sediments. The next lithologic unit, called the Lebanza Formation, consists of some 100 metres of well-bedded limestones with shale intercalations at the base and top of the formation. This formation is extremely fossiliferous. Brachiopods dominate; tentaculites, trilobites, pelecypods, corals, stromatoporoids, bryozoans, and crinoid stems also occur. The diagnosis and systematic position of 18 of the brachiopods are discussed, viz. 3 dalmanellids; 7 rhynchonellids, including 3 new species; 4 terebratuloids; and 4 rostrospirids. Special attention is paid to the internal structure which was studied in serial sections by means of the peel technique. Drawings of the more important sections are given with each diagnosis. In total, 25 species were determined in the brachiopod assemblage. Different assemblages occur in the upper and lower parts of the formation. The association in the lower part gives no definite indications about the age of these rocks. With their stratigraphical position taken into account, an Upper Gedinnian to Lower Siegenian age is concluded. The upper part of the formation shows only typical Siegenian species. On account of the correspondence with faunas of the Middle Siegenian formations of the Massif Armoricain (Brittany, France), the age of this part of the formation can be established as Middle Siegenian. The correlations with sequences in adjacent areas are discussed. There is a marked divergence from the brachiopod succession in other parts of the Cantabrian Mountains, due to different oecological factors.

Beschreibung: The present investigation is a systematical treatment of the sporomorphs from strata at the Jurassic-Cretaceous boundary in the eastern Netherlands Twente area, and an attempt to apply palynology to detailed stratigraphical study, by making use of quantitative pollen analyses. The rock samples used have been derived from two drilled sections in the eastern Netherlands, each of them representing the uppermost Jurassic and lowermost Cretaceous. The sediments are part of the sequence belonging to the Mesozoic Lower Saxon Basin; they contain the so-called ”Wealden” beds, the age of which is not exactly known. Two pollen diagrams were composed from the analyses and show major pollen fluctuations, which are most probably to be regarded as a consequence of long-range oscillations of vegetational belts near the western border of the Lower Saxon Basin. The purpose of the investigation has been to establish the time-stratigraphical position of the ”Wealden” more precisely and furthermore, to establish major quantitative frequency changes in the pollen flora at the Jurassic-Cretaceous boundary. For this purpose the diagrams have been divided into nine pollen zones R to Z, based on first and last occurrence of sporomorph species. The ”Wealden” section contains nearly three zones (V to X). Recent correlation in several European stratigraphical sequences, based on ostracods, have shown that the Jurassic-Cretaceous boundary in the Dutch-German stratigraphy may be located between the base of the Serpulite and the upper limit of ostracod zone ”Wealden” 4, with strong indications that it might even be placed in a much less extended interval, ranging from the uppermost Serpulite to the base of ostracod zone ”Wealden” 2, that is to say from the base of pollen zone V to the base of pollen zone W. The present investigation in the field of palynology takes also into consideration the rhythmic fluctuations, shown in the pollen diagrams from the eastern Netherlands. Similar fluctuations were recorded in the pollen flora from Maastrichtian and Paleocene strata in Colombia, South America. They are attributed to regular oscillations of the climate at timeintervals of approximately 2.3 million years and 7 million years. These rhythmic fluctuations were also recorded in the sedimentary history of the Eastern Cordillera in Colombia during the Cretaceous; they are assumed to originate from regular sea-level oscillations, taking place synchronously with the Cretaceous ages at time-intervals of around 7 million years. Applying this theoretical time-scale to the pollen diagrams from the eastern Netherlands, it might be possible to attribute the rhythmic oscillations, shown in the Dutch pollen flora, to time-intervals of approximately 2.3 million years. In this case the Berriasian occupies 3 cycles immediately underneath the Valanginian, that is to say the pollen zones X and W, and possibly also zone V. The Jurassic-Cretaceous boundary might then be located at the base of zone W or the base of zone V. This agrees with a major change in the quantitative and qualitative composition of the pollen flora, and with the results of the correlation based on ostracods.

Beschreibung: Die Geburt der Laboratoriumratte wird kurz beschrieben. Das Fressen der Nachgeburt ist nicht notwendig für eine gute Milchsekretion. Die Feten liegen in gekrümmter Haltung in der Gebärmutter, aber werden während der Austreibung gestreckt. Die Austreibung erfolgt nicht immer abwechselnd aus den beiden Uterushörnern. Die Trennung von Plazenta und Uteruswand wird von der Wehentätigkeit herbeigeführt. Durch eine Verschiebung im Bindegewebenetzwerk unter der Plazenta ändert sich die Struktur, sodass diese flache Schicht einen relativ hohen Wulst bildet. Die zirkulär verlaufenden collagenen Fasern bekommen deshalb nach Lösung der Plazenta einen radiären Verlauf. Die Rückbildung dieses Bindegewebewulstes wird beschrieben. Makrophagen spielen dabei eine wichtige Rolle. Nach etwa 5 Monaten ist die Rückbildung vollständig und ist die Narbe nur noch an einer kleinen haemosiderinreichen Stelle erkennbar. Der Epitheldefekt wird etwa 48 Stunden nach der Geburt geschlossen. Unmittelbar nach der Geburt zieht sich die Wunde zusammen infolge der Verschiebung im Bindegewebenetzwerk unter der Wunde. Eine halbe Stunde nach der Geburt faltet sich das Epithel über die Wundränder. Etwa 22 Stunden nach der Geburt findet eine Abflachung der Epithelzellen statt und wenige Stunden später treten die ersten Mitosen auf. Bei der Uterusinvolution der Ratte spielen also mehrere Faktoren eine wichtige Rolle. Die älteren Autoren haben häufig nur ein oder zwei dieser Phaenomene beschrieben. Wir konnten tatsächlich alle in der Literatur erwähnten Möglichkeiten, mit Ausnahme der Neubildung von Epithelzellen aus Bindegewebezellen, bestätigen. Es handelt sich hier aber nicht um eine Frage nach der Richtigkeit der verschiedenen Auffassungen, denn nach unseren Befunden treten die einzelnen Prozesse zum Teil zu gleicher Zeit auf, zum Teil auch finden sie nacheinander statt in einem und demselben Uterus.

Beschreibung: During the last world war the town of Caen was almost completely destroyed. The valuable collections of the Caen herbarium (CN) were evacuated and were thus saved. It is now twenty years after the war. The town of Caen has been beautifully rebuilt and the newly erected buildings of the university are very impressive. This university, founded in 1432, is now said to be not only the oldest but at the same time the most modern in France. Although the herbarium is now in a modern building, this does not mean that it is managed in a modern way.

Beschreibung: We deeply regret to have lost three ardent supporters since the last bulletin appeared. Among them the nestor of Malesian botanists, Mr. I. H. Burkill, who passed away at the age of 94, a gentle scholar whom we had the privilege to meet on several occasions and with whom we had a fairly lively correspondence. Originally a collaborator of Sir George Watt on Economic Products of India, explorer of the Abor Expedition, Assam, later director of the Singapore Botanic Gardens, he had a wonderful knowledge of and intense interest in the relations between man and plants. This was probably the reason that he got deeply interested in the botany of the yam family, of which he became a specialist, taxonomical, ecological, morphological and anatomical. He had also a deep interest in the relations between plants and animals, pollination, seed dispersal, subjects now much neglected because of the modern specialisation of biologists. His classic Dictionary of the Economic Products of the Malay Peninsula is in course of a second edition and his learned essays on the History of Indian Botany is expected to appear in book form.

Beschreibung: The 150th Anniversary Volume of the Royal Botanic Garden Calcutta. Parts I-II. Edited by Dr. K. Biswas. Bengal Government Press, Allpore, Bengal. The title page of this book is without date. The anniversary took place in 1938.

Beschreibung: Abid, Munir Ahmad: A revision of Petraeovitex (Verben.) (Gard. Bull. Sing. 21, 1965, 215-257, tab. I-IV, maps 1-4, fig. 1-15). Monograph; keys; descr.; distr. maps and detailed fig. Agnihothrudu, V.: Notes on Fungi from North-East India. XX. Two new parasitic Fungi from the tea gardens (Mycologia 56, 1964, 420-424, 7 fig.).

Beschreibung: SHREVE & WILLIAMS (1963) have discussed at some length the relationships between several named forms of West Indian Eleutherodactylus, including E. pictissimus Cochran and E. weinlandi Barbour. The former had been long known from only the type specimen from the Massif de la Hotte on the Tiburon Peninsula of Haiti, and the latter from the Peninsula de Samana and extreme eastern and northern Republica Dominicana. Extensive Haitian collections amassed by Dr. ERNEST E. WILLIAMS for the Museum of Comparative Zoology (MCZ) and large lots of specimens collected by the writer and parties in the years 1962 and 1963 have elaborated the distribution of these two species, and have made it possible to ascertain geographic variation in both. In addition to my own collections, I have been able to study those of the American Museum of Natural History (AMNH), Museum of Comparative Zoology, United States National Museum (USNM), and the Museum of Zoology, University of Michigan (UMMZ); for the privilege of examining these specimens I wish to thank Mr. CHARLES M. BOGERT and Miss MARGARET BULLITT, Dr. ERNEST E. WILLIAMS, Dr. DORIS M. COCHRAN, and Dr. CHARLES F. WALKER and Mr. GEORGE R. ZUG. Miss PATRICIA A. HEINLEIN, and Messrs. RONALD F. KLINIKOWSKI, DAVID C. LEBER, DENNIS R. PAULSON, and RICHARD THOMAS have been enthusiastic assistants in my Hispaniolan ndeavors, and they deserve my most sincere thanks for their help. The figures in the present paper are the work of Mr. LEBER and Mr. KLINIKOWSKI, who again have made significant contributions to the effort.

Beschreibung: Les deux seules especes de Pénicillates connues de Haïti (Hispaniola) ont été décrites par H. F. LOOMIS (1934b, 1936): Lophoproctus niveus, de l’île Beata près de la cote méridionale de Haïti, auquel furent attribués aussi des specimens récoltés plus tard à Kenscoff, et Lophoproctus aequatus, de Petite Rivière de Artibonite. Grace à l’amabilité de M. H. F. LOOMIS, du Pr. F. M. CARPENTER et du Dr. H. W. LEVY, il nous a été possible d’examiner à Nancy les paratypes de ces deux espèces dont les descriptions, déjà anciennes, ne tenaient pas compte des critères importants introduits récemment dans la systématique du groupe. Nous donnerons done ici des diagnoses aussi complètes que le permettent l’état de conservation de ces échantillons.

Beschreibung: The calcareous algae were important rock-builders in the deposition of the many limestone members of the Pisuerga Basin. Systematic descriptions are given of 12 species. The following species are new: Clavaporella reinae, Clavaphysoporella endoi, Epimastopora camasobresensis, Psuedoepimastopora? impera and Vermiporella hispanica. The algal associations in the Pisuerga Basin may be classified into six distintive zones, one of which can be subdivided into two subzones. Many of these zones are readily comparable with those distinguished elswhere in the Cantabrian Mountains and can be directly correlated with the foraminiferal faunas associated with them. While five of these zones contain associations of definitely Carboniferous algal floras, the uppermost contains both Carboniferous and Permian elements. A brief discussion of ecological aspects is made.

Beschreibung: During the years 1958-1960, several shipments of specimens collected in the Caguanes Caves of Cuba were sent to the United States National Museum by GILBERTO SILVA TABOADA. Mr. SILVA'S collections included 3 specimens of a blind anthurid isopod, which I determined to be a species of Cyathura, similar to but apparently specifically distinct from C. curassavica Stork (1940) from Curaçao, Netherlands Antilles. I wish to express my thanks to Mr. SILVA for the gift of these unusual troglobitic crustaceans and to Dr. P. WAGENAAR HUMMELINCK for the loan of specimens of C. curassavica for comparison. Having these specimens at my disposal has enabled me to supplement herein STORK'S description and illustrations.

Beschreibung: Cambrian sandstones, limestones and slates, unconformably overlain by Ordovician and Silurian slates, intruded by Hercynian granodiorite and dolerite, and Alpine andesite, occur. The traditional rock stratigraphic subdivisions of the sequences below the Ordovician unconformity are here proposed as formal units. Cabitza Formation Calcescisti Member Iglesiente Group Metallifero Formation Calcare Member Arenarie Formation (base not seen) Dolomia Member It is possible to distinguish Cambrian from Ordovician slates even where the basal conglomerate of the latter fails. As a consequence part of the official geological map (scale 1 : 100000, 1938) had to be revised. The Cambrian and the Ordovician-Silurian rocks have undergone respectively four and three deformation phases with the development of slaty, fracture and crenulation cleavages. The large E-W folds of the Cambrian Sardic-phase are partly concentric (Arenarie and Metallifero rocks) and partly similar (slaty cleavage in the Cabitza slates). The second phase, also E-W, caused a further tightening of the ”Sardic” structures and folded the Ordovician and Silurian rocks. The third deformation phase (N-S) was the Hercynian mainfolding, accompanied by fracture and crenulation cleavage. The fourth and last Hercynian phase (NW-SE and NE-SW) made a conjugate system of folds and cleavages. A specific structural pattern (domes, basins etc.) followed from the interference of these fold systems (”Schlingenbau”). Most folds are disharmonie as a result of differences in rock competencies of the Cambrian Formations. The Cambro-Ordovician unconformity has been partly obliterated by slip (”decollement”) due to disharmonic folding above and below this plane. Limestones have been partly converted into lime-silicate rocks by Hercynian hydrothermal and pneumatolytical action along irregular zones and an interesting skarn mineral paragenesis developed. The ore deposits (Pb, Zn, Cu etc.) are almost completely tied to the limestones of the Cambrian Metallifero Formation. The ”lead-modelages” of galena samples from Min. Giuenni (N-Sulcis) and Min. Monte Poni (S-Iglesiente), both deposits in the Metallifero Formation, are about 600 million years old; samples from Min. Monte Vecchio (N-Iglesiente) and from an outcrop along the road Siliqua-Acquacadda, deposits respectively in a Hercynian quartzdike and a Cambro-Ordovician lime-silicate rock, are about 400 million years old. Almost all deposits have been rejuvenated during the Hercynian orogeny.

Beschreibung: Conodonts have been extracted from calcareous units of the Devonian and Lower Carboniferous sequence from 3 areas in the S. part of the Cantabrian Mountains. There can be distinguished Emsian, Givetian, Frasnian, Famennian and Viséan faunas.

Beschreibung: During the summer of 1962, the author collected many Orbitolina-bearing samples in northern Spain with financial support of the ”Molengraaff Fonds”. One of the samples also was rich in other conspicuous foraminifera, which deserve a description.

Beschreibung: The geology of the map sheet 6, Aston, is described. The stratigraphic sequence consists of Paleozoic rocks from Cambro-Ordovician to Carboniferous age and some Cretaceous rocks along the northern border of the axial zone. The lower part of the Cambro-Ordovician is strongly metamorphosed and consists of micaschists, migmatites and granites. A leucocratic augengneiss, probably an orthogneiss, forms the core of the Aston-Hospitalet massif. Two intrusive granites occur in the Paleozoic rocks. Two types of major structures are distinguished, the metamorphic infrastructure and the non-metamorphic suprastructure. Several phases of deformation, all belonging to the Hercynian orogeny have been recognized. The relationships of the metamorphism to these deformation phases and the metamorphic events of the orthogneisses are described.

Beschreibung: Several folded structures are described from an area in the western part of the Aston massif. The examples discussed date mainly from the first, the third and the fourth phase of deformation.

Beschreibung: Short descriptions and camera lucida drawings are given of cross-sections through the hymenophoral trama (lamellae or tubes) of 24 Basidiomycetes. These represent all the 16 Families of the Agaricales sensu Singer (1962). The typical members of the Agaricales in a limited definition have to be characterised by a more or less regular or bilateral trama with enlarged cells, or with swollen cellwalls in the Boletaceae, Strobilomycetaceae, Gomphidiaceae and Paxillaceae. In species of the genera Polyporus, Pleurotus (Polyporaceae), Lentinellus and Crepidotus such enlarged or swollen cells are lacking, the trama is irregular and is composed of a dense network of thickwalled hyphae. These genera and others like Schizophyllum better can be classified in the Aphyllophorales.

Beschreibung: Gazetteer to the Philippine Road map, compiled by M. Jacobs. Reprints of precursory papers, as far as available.

Beschreibung: Baehni, Ch. (1906-1964) G. Bocquet, Obituaries in Bull. Soc. Bot. Fr. 111 (1964) 192-195, and in Candollea 19 (1964) 1-15 + portr. and bibliogr.

Beschreibung: C. A. Backer & R. C. Bakhuizen van den Brink, Flora of Java, volume 2, will be published about New year 1966. This volume will deal with the second half of the dicots; the third and last volume will give the monocots. The 641 pages of text of this volume will be preceded by a 72-page essay by Dr. C. G. G. J. van Steenis under the title: Concise plant-geography of Java. The main contents of this essay are here listed: Very brief survey of collections and phytography (four periods are distinguished, marked by the years 1817, 1860, 1905). Brief survey of vegetation types (submerged littoral – mangrove – beach – lowland swamp forests – hydrophytic vegetation – rheophytes – dryland rain forest – montane rain forest – mountain- swamps – subalpine – vegetation – monsoon forest; 32 photographs for illustration). General statistics (wild species 4598, introduced 413, cultivated 1523). Comparison of the floras of west, central, and east Java (west 3882, central 2851, east 2717 native species). Number and distribution of epiphytes, parasites, and saprophytes through Java (epiphytes 701, confined to west 251, to central 22, to east 23; parasites 61; saprophytes 41). Floristic difference between the coastal floras of north and south Java and its explanation (lists of species confined to the north and to the south coast given; physiographic factors discussed). The floristic plant-geographical position of Java and its adjacent islands (Sunda Strait is an important barrier; Java has many wide-spread species; the Lesser Sunda Is. are Javanese in flora but poorer. The present paucity of South Malesia seems due to the monsoon climate, absence of certain soil types, heavy devastation of Java, and long isolation of the island. Kangean and Bawean differ but slightly from Java in their flora). Endemic genera and species in Java (at present only Grisseea of Apocyn., Heynella of Asclep., Semeiocardium of Balsam., and Silvorchis of Orch. left; the number of species is negligible). Representation of elements (Widely distributed in Java 630, in Malesia 685; Asia-centered J 402, M 616; Malesia-centered J 316, M 580; Endemic J 4, M 298; Eastern-centered J 18, M 137). Altitudinal distribution (three tables with highest and lowest localities for the genera every 100 m; altitudinal deviations discussed for species which occur occasionally higher and lower than normal; regional shift of altitude; altitudinal differences through racial segregation). Climate and flora in Java – Plants as climate indicators (contains a comparison of the merits of the climate scales by Van Bemmelen, Mohr, and Schmidt/ Ferguson, by application of 73 species to the drought classes of these authors; 164 species have been listed as indicators of an everwet climate). Many references have been added to each chapter. Address of the publisher: P. Noordhoff, P.O. Box 39, Groningen, Netherlands.

Beschreibung: *Ashton, P.S.: Ecological studies in the mixed dipterocarp forests of Brunei State. Oxford Forestry Memoirs no 25, Clarendon Press, Oxford, 1964, 75 pp., 57 phot., 20 tab., 70 fig., gazetteer. This book is the first extensive field study in Brunei and besides of great value as a source of general information on that country. There is, for instance, a diagrammatic map on rainfall distribution, ageological and litho-pedological sketchmap, a map of contour lines, and detail maps of the areas of closer study.

Beschreibung: Galerina propinqua Bas, sp. nov., belonging to Galerina section Tubariopsis, is described. The name Galerina sect. Tubariopsis Kühn. is validly published by providing a Latin description; the taxonomic status of this section is discussed.

Beschreibung: Chrysosplenium op Voorne. Als aanvulling op de beschouwingen van Dr. V. Westhoff in Gorteria 2, no. 7, p. 73—77 kan ik het volgende vermelden. In de kwekerij van de firma Van Tubergen te Haarlem is Chrysosplenium alternifolium een onkruid in de bakken waar varens gekweekt worden en andere soorten, die koelte en vocht verlangen. Waarschijnlijk is de soort meegekomen met in het wild verzamelde varens uit het buitenland. Met het fijne zaad heeft zij zich daar uitgezaaid op de kluiten van vaste planten. Ook in de tuin van de fam. Verhagen te Rockanje is Chrysosplenium een onkruid. Er is daar een waterloopje en er staan alle mogelijke planten, die het wegschoffelen bemoeilijken, zodat de plant zich overal in het vochtige gedeelte van de tuin verspreidt. In mijn eigen tuin, onder minder gunstige omstandigheden voor de soort, is de plant achteruitgegaan en vrijwel verdwenen. Hoe de plant in de tuin van de fam. Verhagen is gekomen is niet met zekerheid bekend. Wijlen Dr. Verhagen verzamelde veel op zijn reizen, maar ook kunnen planten meegekomen zijn met materiaal van de firma Van Tubergen.

Beschreibung: The present report is based on the very extensive collections of Hydroidea from the Caribbean region which have been assembled by Dr. P. WAGENAAR HUMMELINCK during his scientific explorations of the fauna of that region. The study of the Sertulariidae, Plumulariidae and Aglaopheniidae, the results of which are contained in the present report, was carried out in the Rijksmuseum van Natuurlijke Historie, Leiden, the Netherlands, from October 1960 till February 1962. Part of HUMMELINCK'S hydroid material has already been studied and reported upon by LELOUP (1935). This material is in the collections of the Rijksmuseum van Natuurlijke Historie, except for some specimens from a small number of localities which are now in the collections of the Institut Royal des Sciences Naturelles de Belgique, Brussels. The material examined by LELOUP – in so far as it is still in the collections of the Rijksmuseum van Natuurlijke Historie and contains specimens of the three families studied – has been included in this survey, but it has only been discussed when the author reached a different conclusion. The present records must therefore be considered as supplementing those given in LELOUP'S (1935) paper; together they illustrate the occurrence and distribution of the various species in the area visited by Dr. WAGENAAR HUMMELINCK [Table 1],

Beschreibung: The presence of coccoliths and discoasters in Adriatic bottom sediments is established. Both recent and fossil or allochthonous forms can be distinguished. The grab samples are located in sections across the sea. A consistent decrease of land-derived forms and an increase of recent forms can be observed in the composition of the species in the samples at increasing distances from the Italian coast. It is thought that these land derived forms are allochthonous, originating from the mountains of the Italian peninsula and brought down by rivers to the sea-shore from where they were swept out to the open sea by currents. These forms are indicative of Upper Cretaceous and Tertiary sediments and many are shown in polarized light to be in a recrystallized state. The supply of material from the eastern or Yugoslavian side of the sea turned out to be negligible. A relation was found between the composition of the samples and the pattern of sea currents. It was concluded, however, that their strong tendency to be reworked resulting from easy transportation over great distances, together with their little effect of solution, must be considered a serious drawback in stratigraphic use. As a result the reworked forms can not easily be distinguished from those in situ. The study further includes a systematic description of some of the more common forms. The techniques used are shortly mentioned and the technical difficulties when using both light and electron microscopes are briefly discussed.

Beschreibung: The ”Cordillera Cantabrica”, which borders the Old-Castilian meseta in the north, is mainly a Hercynian mountain chain. The area with which this study is concerned is part of the southern border of this mountain belt and lies in the northeast in part of the province of Palencia. The topographic elevation varies from approximately 1000 m at the southeastern border to 2000 m in the northeastern and western parts. The central part of the mountain range has a true mountain climate, but towards the south this rapidly becomes semi-arid continental. The Pisuerga River, flowing south, is the main river; its drainage-area borders towards the northeast on that of the Ebro River and towards the west — near Santibañez — on that of the Carrion River. For more information about the topography, morphology, and Quaternary history of this territory, the reader is referred to the publications of Hernandez Pacheco (1944) and Nossin (1959).

Beschreibung: Minutes of the 65-3 meeting of the Pacific Southwest Inter-Agency Committee's Phreatophyte Subcommittee. Held August 30-31, 1965, at Grand Junction, Colorado.

Beschreibung: Die Geburt der Laboratoriumratte wird kurz beschrieben. Das Fressen der Nachgeburt ist nicht notwendig f\xc3\xbcr eine gute Milchsekretion. Die Feten liegen in gekr\xc3\xbcmmter Haltung in der Geb\xc3\xa4rmutter, aber werden w\xc3\xa4hrend der Austreibung gestreckt. Die Austreibung erfolgt nicht immer abwechselnd aus den beiden Uterush\xc3\xb6rnern. Die Trennung von Plazenta und Uteruswand wird von der Wehent\xc3\xa4tigkeit herbeigef\xc3\xbchrt. Durch eine Verschiebung im Bindegewebenetzwerk unter der Plazenta \xc3\xa4ndert sich die Struktur, sodass diese flache Schicht einen relativ hohen Wulst bildet. Die zirkul\xc3\xa4r verlaufenden collagenen Fasern bekommen deshalb nach L\xc3\xb6sung der Plazenta einen radi\xc3\xa4ren Verlauf. Die R\xc3\xbcckbildung dieses Bindegewebewulstes wird beschrieben. Makrophagen spielen dabei eine wichtige Rolle. Nach etwa 5 Monaten ist die R\xc3\xbcckbildung vollst\xc3\xa4ndig und ist die Narbe nur noch an einer kleinen haemosiderinreichen Stelle erkennbar. Der Epitheldefekt wird etwa 48 Stunden nach der Geburt geschlossen. Unmittelbar nach der Geburt zieht sich die Wunde zusammen infolge der Verschiebung im Bindegewebenetzwerk unter der Wunde. Eine halbe Stunde nach der Geburt faltet sich das Epithel \xc3\xbcber die Wundr\xc3\xa4nder. Etwa 22 Stunden nach der Geburt findet eine Abflachung der Epithelzellen statt und wenige Stunden sp\xc3\xa4ter treten die ersten Mitosen auf. Bei der Uterusinvolution der Ratte spielen also mehrere Faktoren eine wichtige Rolle. Die \xc3\xa4lteren Autoren haben h\xc3\xa4ufig nur ein oder zwei dieser Phaenomene beschrieben. Wir konnten tats\xc3\xa4chlich alle in der Literatur erw\xc3\xa4hnten M\xc3\xb6glichkeiten, mit Ausnahme der Neubildung von Epithelzellen aus Bindegewebezellen, best\xc3\xa4tigen. Es handelt sich hier aber nicht um eine Frage nach der Richtigkeit der verschiedenen Auffassungen, denn nach unseren Befunden treten die einzelnen Prozesse zum Teil zu gleicher Zeit auf, zum Teil auch finden sie nacheinander statt in einem und demselben Uterus.

Beschreibung: 1. From Antarctic female Fin Whales, Balaenoptera physalus, a collection, consisting of baleen plates and the parts of these plates embedded in the gum, ovaries, and a number of earplugs was examined, in order to determine the age of these animals and to get a better insight in some characteristics of their reproduction. Data concerning pregnancy and lactation were also recorded. The material was sampled from animals worked up on board the f.f. \xe2\x80\x9cWillem Barendsz\xe2\x80\x9d during the Antarctic seasons 1953/1954 to 1959/1960 inclusive. The possibilities and values of age determination for this species were considered, based on the results of the analyses of the above material. 2. In most seasons the length distribution of the female Fin Whales, from which the material for the age determination was sampled (\xe2\x80\x9cexamined animals\xe2\x80\x9d), did not differ significantly from that of the total catch of females of the \xe2\x80\x9cWillem Barendsz\xe2\x80\x9d in the same seasons. Neither was there any significant difference in length distribution between the total number of females from which the material was sampled and that of the females in the catch of the \xe2\x80\x9cWillem Barendsz\xe2\x80\x9d in all seasons. However, the length distribution of the catch of the \xe2\x80\x9cWillem Barendsz\xe2\x80\x9d differed significantly from the total Antarctic pelagic catch. 3. Baleen records were made according to the method described by RUUD (1940). In contrast with his age determinations with the aid of the part of the baleen plate protruding from the gum also the part of the plate hidden in the gum was used. A method of reading this part was developed. The advantage of this method is that the total length of baleen plate examined is much longer, and that the part hidden in the gum is not yet worn. In addition, the use of the part hidden in the gum has the undeniable advantage that the end of the cortical layer at the base of the \xe2\x80\x9croot\xe2\x80\x9d of the baleen plate represents the only exact date: the date at which the animal was killed. 4. Apart from the large waves of the cortical layer of the baleen plate the so-called \xe2\x80\x9crelief\xe2\x80\x9d was also used to divide the record of the baleen plate into \xe2\x80\x9dgrowth periods\xe2\x80\x9d. The large waving is probably caused by variation in growth resulting from migration and available food, whereas the \xe2\x80\x9crelief\xe2\x80\x9d is probably a reflection of certain physiological events in the life of the animal, e.g. the sexual cycle. The influence of the sexual cycle may account for the fact that the records of the sexually immature animal and the sexually mature male animal and female animal show obvious differences, the external circumstances of life being more or less equal for all animals. LAWS (1961) is of the opinion that there is a certain relation between the sexual cycle and migration. \xe2\x80\x9cIt is suggested that, as in females at puberty, the biannual ovulatory periods are primarily related to the twice-yearly period of increasing day lengths associated with the north and south migrations.\xe2\x80\x9d If this is correct migration (day-light, feeding) might reinforce the influence of the sexual cycle on the growth of the cortical layer of the baleen plate. In that case the so-called \xe2\x80\x9covulation peaks\xe2\x80\x9d would become very prominent in the \xe2\x80\x9crelief\xe2\x80\x9d of the baleen plate, which they actually do. 5. With the aid of periodical configurations of peaks and hollows in the baleen records the curves were divided into \xe2\x80\x9cgrowth periods\xe2\x80\x9d, which were supposed to represent periods of one year each.\nOne special configuration of peaks was regarded as an \xe2\x80\x9covulation peak\xe2\x80\x9d. This was confirmed by the condition of the animal with regard to pregnancy or the age of the foetus. 6. It was proved that there was a significant regularity in the succession and the heights of the peaks and hollows of the \xe2\x80\x9crelief\xe2\x80\x9d of the baleen plate according to FRIEDMANN\xe2\x80\x99S method of m-ranking. This means that the \xe2\x80\x9crelief\xe2\x80\x9d is not formed in an arbitrary way but is a reflection of particular events in the life of the animal. Besides it was shown by VAN UTRECHT (1965) that each peak will be formed at a particular time and place in the \xe2\x80\x9croot\xe2\x80\x9d of the baleen plate. 7. The method of age determination described by the present author is to be regarded as an improvement of RUUD\xe2\x80\x99S method since a. the entire baleen plate is used in the analyses as stated above sub 3., b. besides the large waving also the \xe2\x80\x9crelief\xe2\x80\x9d of the baleen plate is taken into account.\nThough in itself too time-consuming for routine examinations it already offers the possibility of c. determining the mean rate of ovulation by means of \xe2\x80\x9covulation peaks\xe2\x80\x9d and d. determining the moment of attainment of sexual maturity. 8. It is evident that as to the Fin Whale, age determination with baleen plates can generally be used up to and including the fourth year of life. In the records of the baleen plates of all these animals there are indications of their suckling or weaning periods. If the baleen plates contain more than four \xe2\x80\x9cgrowth periods\xe2\x80\x9d the part of the baleen plate formed during the weaning period is generally worn off and then only a minimum age can be determined. Consequently in those animals having more than four \xe2\x80\x9cgrowth periods\xe2\x80\x9d in their baleen plate records and showing indications of at least the weaning period (\xe2\x80\x9cdouble hump\xe2\x80\x9d), the baleen plate can also be used in age determinations. 9. So far the baleen plate method was only used to determine minimum ages. Now further analyses of baleen plates were made to gain an insight into the mean age at which the animals attain sexual maturity and into the mean rate of ovulation. In age determinations of mature females these results enable us to use the ovaries only. 10. It is necessary to know something of the number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d hidden in the gum and of the way this number varies to be able to compare earlier determinations of the age at which the animals attain sexual maturity by means of baleen plates, with my results. 11. Of all examined animals the mean number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d hidden in the gum appeared to be 1.79. In young animals (up to and including 4+ \xe2\x80\x9cgrowth periods\xe2\x80\x9d) this number varied from 0.5 to 2.0. This is contrary to RUUD\xe2\x80\x99S idea that in animals younger than five years, only part of one \xe2\x80\x9cgrowth period\xe2\x80\x9d is present in the gum, which can be ignored. The maximum number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d found in the part of the baleen plate hidden in the gum appeared to be 2.8. 12. The mean number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d hidden in the gum increases with a. the increase in number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d in the total baleen plate, b. the increase in number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d in the outer baleen plate, c. the increase in length of the animals.\nIn sexually mature animals the mean number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d hidden in the gum does not increase with the increase in age. 13. If there is a small number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d in the outer baleen plate they are significantly longer than those in baleen plates with a greater number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d. The mean length of the \xe2\x80\x9cgrowth periods\xe2\x80\x9d decreases with the increase in age. 14. The number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d in the baleen plate depends on the length of the baleen plate. In a longer plate the number of \xe2\x80\x9cgrowth periods\xe2\x80\x9d is significantly greater. Moreover, there is a linear correlation between the length of the baleen plate and the length of the animal. 15. Female Fin Whales in the Southern Hemisphere attain sexual maturity in their sixth, seventh or eighth year of life. Most of them will attain sexual maturity in their seventh year. In most of the earlier investigations it was accepted that the female Fin Whale attained sexual maturity in the fifth or sixth year of life. This difference may be accounted for by the fact that, as a mean, 1.79 \xe2\x80\x9cgrowth periods\xe2\x80\x9d are hidden in the gum instead of only part of one \xe2\x80\x9cgrowth period\xe2\x80\x9d as RUUD supposed. In investigations carried out by the Committee of Three Scientists appointed by the International Whaling Commission, it is commonly accepted that female Fin Whales attain sexual maturity in their fifth year of life. This age is probably too low. 16. The variation in age at which sexual maturity can be attained is probably caused by the existence of three so-called \xe2\x80\x9cconstitution types\xe2\x80\x9d. These different types in the catch may also be responsible for the considerable variation in length of the baleen plates and the number and length of the \xe2\x80\x9cgrowth periods\xe2\x80\x9d in the baleen plates of the different types. 17. The mean rate of ovulation is 2.5 per period of two years. This calculation is based on the presence of the \xe2\x80\x9covulation peaks\xe2\x80\x9d in baleen plate records, and the lapse of time represented by that portion of the record between two such peaks. This is based on the assumption that each \xe2\x80\x9cgrowth period\xe2\x80\x9d represents a period of one year and that the growth of the baleen plate is, as a mean, regular. A correction factor is applied because multiple foetuses, accessory corpora lutea and several simultaneous ovulations are found.\nDuring the whole life of the female Fin Whale the mean rate of ovulation is constant. A decrease of fertility will not occur at all, or only very late in its life. 18. Most ovulations of the examined animals occurred during the southern winter (June to September inclusive), although a reasonable number of ovulations occurred in the southern summer. 19. If no pregnancy follows the interval between two ovulations is in most cases circ. 6 months, other possibilities are circ. 12, circ. 18 and circ. 24 months. In one case an interval of circ. 30 months was found. 20. It is proved and accepted that corpora albicantia persist during the whole of the whale\xe2\x80\x99s life, although they do reduce to a mean diameter of 2.0 cm. This persistence makes it possible to make an estimation of the age of an individual. In a large sample such an estimation is sufficient to reach a conclusion about the age distribution. 21. The weight of the ovaries in immature females increases with the increase in length. To a certain extent the age of these young animals correlates with their length, so there is also a correlation between the weight of the ovaries and the age of the animal. 22. When the animals attain sexual maturity there is a significant increase in weight of the ovaries. 23. In mature females there is a correlation between the weight of the ovaries and the length of these animals. With regard to the age of the animals there is at first an increase and subsequently a decrease in weight of the ovary. This may be an indication of a decrease of the sexual activity in some species. However, this is not the case in the female Fin Whale. The mean rate of ovulation and the percentage of pregnant females remains constant as age increases. A plausible explanation for these facts is that there is a proceeding wave of ovulations, from the pole of the ovary directed to the bursa ovarica to the opposite pole. If the main ovulatory activity occurs in the first half of the ovary (i.e. the part adjacent to the bursa) both halves will increase in weight; if the ovulatory activity occurs mainly in the second half, the first half is mainly inactive and will decrease in weight. At a certain time the decrease in weight of the first half will be greater than the increase in weight of the second half, so that the total weight of the ovary will decrease while the mean rate of ovulation remains constant.

Beschreibung: A six to seven year-old female okapi died after a week of illness showing clinical signs of an acute infection of the respiratory tracts. Antibiotic therapy did not influence the course of the disease. The postmortem examination demonstrated the presence of acute laryngitis, tonsilitis, tracheo-bronchitis, bronchopneumonia and serifibrinous exudate, together with a subacute and subchronic myocarditis and hepatitis. Bacteriological cultures from the spleen, liver, kidneys, and the lungs, yielded two strains of Escherichia coli.\nForty-eight hours after the death of the female, the male okapi became ill and it was treated with antibiotics indicated by the sensitivity tests carried out upon the Escherichia coli noted in the dead female: ampicilline was thus injected into the male whose health gradually improved and a complete recovery occurred.

Beschreibung: The results are given of different anthelmintics administered to control intestinal parasitism in two okapis. With Mintic (oral) and Thiabendazole (oral) complete eradication was achieved clinically which was subsequently confirmed at the post-mortem of the female.

Beschreibung: L\xe2\x80\x99A. d\xc3\xa9crit ou cite 47 esp\xc3\xa8ces de Poissons characo\xc3\xafdes r\xc3\xa9cemment r\xc3\xa9colt\xc3\xa9s par M. H. P. Pijpers au Surinam.\nQuatre formes nouvelles pour la science sont d\xc3\xa9crites: Moenkhausia surinamensis, Moenkhausia georgiae, Moenkhausia hemigrammoides et Curimatus esperanzae pijpersi; deux autres avaient \xc3\xa9t\xc3\xa9 d\xc3\xa9crites dans des notes ant\xc3\xa9rieures: Hemibrycon surinamensis et Hyphessobrycon georgettae; deux enfin sont signal\xc3\xa9es comme \xc3\xa9tant des formes nouvelles qui seront nomm\xc3\xa9es \xc3\xa0 partir d\xe2\x80\x99un mat\xc3\xa9riel plus abondant: elles appartiennent respectivement aux genres Myleus et Hemiodopsis (Hemiodus auct.).\nHemigrammus lunatus, Jobertina eleotrioides et Parodon guyanensis sont nouveaux pour la faune du Surinam.\nLa synonymie Hemigrammus orthus = Hyphessobrycon bellotti est sugg\xc3\xa9r\xc3\xa9e.\nDes cl\xc3\xa9s de d\xc3\xa9termination sont propos\xc3\xa9es pour les groupes suivants: groupe doceana du genre Moenkhausia, esp\xc3\xa8ces des Guyanes du genre Creatochanes, Stethaprionidi et ssp. de Poptella orbicularis.\nCertains sujets sont plus particuli\xc3\xa8rement discut\xc3\xa9s: valeur taxonomique et \xc3\xa9volution de la ligne lat\xc3\xa9rale, ssp. de Moenkhausia lepidura et de Poptella orbicularis, biom\xc3\xa9trie et \xc3\xa9cotaxonomie de Gasteropelecus sternicla et de Carnegiella strigata, et revue du sous-genre Hemiodopsis.

Beschreibung: Skeletons are an essential part of every zoological collection. The cleaning of the carcasses or other crude skeletal material obtained from collected animals can be carried out by mechanical defleshing, by boiling in water with or without chemicals, or by a combination of mechanical cleaning and boiling, and these methods are employed in many musea as a routine treatment.\nIn the case of small specimens this process of scraping and boiling almost invariably destroys some of het more delicate structures, so that the preparators are usually very careful when handling small carcasses for fear of damaging them, which often results in incomplete cleaning in spite of their tedious and time-devouring work. They must often feel between the devil and the deep sea, because the obtained skeletons are either damaged or unsatisfactorily cleaned.

Beschreibung: A revision of the Euphorbiaceous genus Meineckia has resulted in the recognition of 19 species, with 7 subspecies and 2 varieties (for a total of 25 distinct taxa). Proposed as new are 5 species and 1 subspecies, while new combinations are necessary for 14 species and 6 subspecific taxa. The extraordinary confusion in the taxonomic history of the genus is illustrated by the fact that the 14 previously recognized species have been classified under 6 different generic names: Cluytiandra, Flueggea, Neopeltandra, Peltandra, Phyllanthus, and Securinega. As revised, the number of species represented in the different regions is as follows: America, 3; Africa and Arabia, 4; Madagascar, 8; India and Ceylon, 4. The genus appears to be of African origin and is probably most closely related to Zimmermannia.

Beschreibung: Noona Dan Expedition. In April 1961 the Danish schooner Noona Dan with a staff of 19, three of them botanists, left Copenhagen to explore in the Philippines during August and September on Palawan, then for two weeks on Balabac, then for a month on Tawitawi; the last two weeks of the year were spent near Zamboanga in Mindanao. The first half of 1962 was spent in the Bismarck Archipelago. In the middle of August, the Solomon Islands were visited; in September-October the expedition members returned to the University of Copenhagen. About 5000 herbarium specimens were collected; especially during the last part of the expedition attention was paid to fungi (T. Wolff in Nature 198, 1963, 1044-1045).

Beschreibung: C. A. Backer & R. C. Bakhuizen van den Brink, Flora of Java, volume 2, will be published about New year 1966. This volume will deal with the second half of the dicots; the third and last volume will give the monocots. The 641 pages of text of this volume will be preceded by a 72-page essay by Dr. C. G. G. J. van Steenis under the title: Concise plant-geography of Java. The main contents of this essay are here listed: Very brief survey of collections and phytography (four periods are distinguished, marked by the years 1817, 1860, 1905). Brief survey of vegetation types (submerged littoral \xe2\x80\x93 mangrove \xe2\x80\x93 beach \xe2\x80\x93 lowland swamp forests \xe2\x80\x93 hydrophytic vegetation \xe2\x80\x93 rheophytes \xe2\x80\x93 dryland rain forest \xe2\x80\x93 montane rain forest \xe2\x80\x93 mountain- swamps \xe2\x80\x93 subalpine \xe2\x80\x93 vegetation \xe2\x80\x93 monsoon forest; 32 photographs for illustration). General statistics (wild species 4598, introduced 413, cultivated 1523). Comparison of the floras of west, central, and east Java (west 3882, central 2851, east 2717 native species). Number and distribution of epiphytes, parasites, and saprophytes through Java (epiphytes 701, confined to west 251, to central 22, to east 23; parasites 61; saprophytes 41). Floristic difference between the coastal floras of north and south Java and its explanation (lists of species confined to the north and to the south coast given; physiographic factors discussed). The floristic plant-geographical position of Java and its adjacent islands (Sunda Strait is an important barrier; Java has many wide-spread species; the Lesser Sunda Is. are Javanese in flora but poorer. The present paucity of South Malesia seems due to the monsoon climate, absence of certain soil types, heavy devastation of Java, and long isolation of the island. Kangean and Bawean differ but slightly from Java in their flora). Endemic genera and species in Java (at present only Grisseea of Apocyn., Heynella of Asclep., Semeiocardium of Balsam., and Silvorchis of Orch. left; the number of species is negligible). Representation of elements (Widely distributed in Java 630, in Malesia 685; Asia-centered J 402, M 616; Malesia-centered J 316, M 580; Endemic J 4, M 298; Eastern-centered J 18, M 137). Altitudinal distribution (three tables with highest and lowest localities for the genera every 100 m; altitudinal deviations discussed for species which occur occasionally higher and lower than normal; regional shift of altitude; altitudinal differences through racial segregation). Climate and flora in Java \xe2\x80\x93 Plants as climate indicators (contains a comparison of the merits of the climate scales by Van Bemmelen, Mohr, and Schmidt/ Ferguson, by application of 73 species to the drought classes of these authors; 164 species have been listed as indicators of an everwet climate). Many references have been added to each chapter.\nAddress of the publisher: P. Noordhoff, P.O. Box 39, Groningen, Netherlands.

Beschreibung: We deeply regret to have lost three ardent supporters since the last bulletin appeared. Among them the nestor of Malesian botanists, Mr. I. H. Burkill, who passed away at the age of 94, a gentle scholar whom we had the privilege to meet on several occasions and with whom we had a fairly lively correspondence.\nOriginally a collaborator of Sir George Watt on Economic Products of India, explorer of the Abor Expedition, Assam, later director of the Singapore Botanic Gardens, he had a wonderful knowledge of and intense interest in the relations between man and plants. This was probably the reason that he got deeply interested in the botany of the yam family, of which he became a specialist, taxonomical, ecological, morphological and anatomical. He had also a deep interest in the relations between plants and animals, pollination, seed dispersal, subjects now much neglected because of the modern specialisation of biologists. His classic Dictionary of the Economic Products of the Malay Peninsula is in course of a second edition and his learned essays on the History of Indian Botany is expected to appear in book form.

Beschreibung: *Ashton, P.S.: Ecological studies in the mixed dipterocarp forests of Brunei State. Oxford Forestry Memoirs no 25, Clarendon Press, Oxford, 1964, 75 pp., 57 phot., 20 tab., 70 fig., gazetteer.\nThis book is the first extensive field study in Brunei and besides of great value as a source of general information on that country. There is, for instance, a diagrammatic map on rainfall distribution, ageological and litho-pedological sketchmap, a map of contour lines, and detail maps of the areas of closer study.

Beschreibung: The hyphal elements in the hymenium of the mature ascocarp do not provide a reliable means of distinguishing an ascohymenial ascocarp from an ascostroma. The nature of these hyphal elements is determined by neither their shape nor their tips but solely by their origin. Furthermore, since it has not yet been proved that there is any relation between the structure of the ascus and the type of development of the ascocarp, the kind of ascus is of relatively little value as a means of determining the developmental type of the ascocarp. Moreover, it is often practically impossible to decide whether an ascus is bitunicate or not. The author does not know of any other feature that is a reliable indicator of the true nature of the ascocarp. Therefore, he sees no other means of determining the group to which the ascocarp is to be referred except to study its mode of development.

Beschreibung: The authors conclude that the separation of the form-genus Peyronellaea Goid. ex Togliani from Phoma Sacc. is both undesirable and unpracticable. A comparative study of the data in the literature, of original cultures, and of herbarium material of the fungi ascribed to Peyronellaea, leads to the distinction of three species: Phoma glomerata (Cda.) Wr. & Hochapf., Phoma prunicola (Opiz) Wr. & Hochapf., and Phoma musae (Joly) comb. nov. The synonymy and characteristics of these species are discussed and a key is given.

Beschreibung: The author discusses the distribution of Anthericum ramosum L. in Northern Germany and Denmark in connection with the finding of this species in the dunes of the isle of Schiermonnikoog. He concludes that the plant is not indigenous there, but was probably introduced with pheasant-food.

Beschreibung: Tetragonolobus maritimus (L.) Roth op de Schneeberg bij Vaals. Als aanvulling op onze mededeling in Gorteria 2, no. 3, 1964, p. 34\xe2\x80\x9435 volgen hier enige gegevens over het voorkomen van T. maritimus op de Schneeberg bij Vaals. Deze gegevens werden ons verstrekt door Dr. J. de Bloeme (Hilversum), die de soort daar in de loop van 1964 aantrof. Hij schrijft hierover het volgende: \xe2\x80\x9eToen ik met de Pinksterdagen (17\xe2\x80\x9418 mei 1964) aan het botaniseren was in Zuid-Limburg, werd mijn aandacht gevestigd op een Papilionacee, die zou staan op de Schneeberg, vlak ten N. van Vaals en die in Zuid-Limburg niet voorkwam. Na enig zoeken vonden wij daar de aangeduide plant, in enige tientallen pas bloeiende exemplaren, aan de zuidelijke helling van de Schneeberg, die, naar beneden toe, eindigt aan een macadamweg, die van 1 km ten N. van Vaals loopt naar het Nederlandse dorp Lemiers (evenwijdig aan de hoofdweg Maastricht-Vaals-Aken); de weg ligt nog juist op Duits gebied; een 10 \xc3\xa0 20 m zuid-westelijk daarvan loopt een beek (Sinzelbeek), die de grens van Nederland en Duitsland vormt\xe2\x80\x9d.\nDe heer Frencken (Hilversum) was zo vriendelijk aan Dr. de Bloeme de naam van de soort te verschaffen, terwijl hij hem ook opmerkzaam maakte op bovengenoemde mededeling in Gorteria. De heer De Bloeme vervolgt dan: \xe2\x80\x9eOnze belangstelling was nu gewekt, zodat wij er zondag 7 juni weer heen togen. De bloei was nu overvloedig: over een breedte van ca. 25 m en vermoedelijk ca. 50 m diep, was die hele helling (vrij steil, ca. 30\xc2\xb0) \xc3\xa9\xc3\xa9n diep-gele vlakte, waar de planten mannetje aan mannetje stonden; bij een grove schatting ten minste een duizendtal exemplaren, waarschijnlijk nog meer. Het terreintje werd afgegrensd door kreupelhout, en merkwaardig was het, dat buiten dit terreintje geen enkel exemplaar meer te vinden was. De bodem was zichtbaar sterk kalkhoudend\xe2\x80\x9d. v. O. en R.

Beschreibung: The authors performed a preliminary survey of Festuca rubra L. s.l. in the outer dunes of the West- Frisian island of Terschelling. Starting-point was the question which dune-form of this grass \xe2\x80\x94 Festuca juncifolia St. Amans or Festuca rubra subvar. arenaria (Osb.) Hack. \xe2\x80\x94 was growing there. In the transsects I and II (fig. 1) on the northern coast of the island a number of plants of Festuca were investigated. Six characteristics were analysed; the most important was the manner in which fibres (sclerenchyma) in the leaf-blades occur (fig. 2). It appears that especially Festuca rubra subvar. arenaria is common in the outer dunes of Terschelling. A continuous layer of fibres \xe2\x80\x94 characteristic of juncifolia \xe2\x80\x94 was not found in the plants studied. This result is remarkable, because juncifolia too should be rather common in the Dutch islands according to the literature.

Beschreibung: Trifolium ornithopodioides L. op Ameland. Op dezelfde dijk waar hij Trifolium micranthum Viv. ontdekte, nl. bij de Reeweg, ten zuiden van Hollum, vond de heer D. T. E. van der Ploeg in augustus 1964 de zeldzame T. ornithopodioides L. Van de Waddeneilanden was deze soort alleen nog maar bekend van Vlieland (1903) en Terschelling (zonder datum, doch vermoedelijk gevonden in een van de eerste decenni\xc3\xabn van deze eeuw). v. O. en R.\nSherardia arvensis L. Op 25 juni 1964 werd door H. N. Leys en J. F. Bannink in een haver-gerst-perceel bij Schadijk, gem. Horst, L., op een oud stuk bouwland met een dun cultuurdek waarin enige stuifzandinvloed, Sherardia arvensis gevonden, een soort die door ons in dit gebied nimmer eerder werd aangetroffen, hoewel wij deze streek veel hebben bezocht en intensief ge\xc3\xafnventariseerd.

Beschreibung: Amsinckia menziesii (Lehm.) Nels. & Macbr., a species occurring in western North America on moist slopes and fields, open valley floors and hillsides, has been found very rarely in 5 places of our country (Gorinchem 1913, Renesse 1952 and 1958, Wageningen 1963, Blauwkapel 1963, Rockanje 1963). In an oats crop naar Venray and Broekhuizen it was found again and collected in 1964.\nThe ecology of this species seems to be the same as that of Lycopsis arvensis L. subsp. arvensis.

Beschreibung: Vele jonge belangstellenden in onze flora blijven in het begin steken, omdat ze niet goed weten, hoe ze het aan moeten pakken. Ze worden teleurgesteld door de moeilijkheden die ze ondervinden, en alleen de echte doorzetters onder hen worstelen zich door die moeilijkheden heen en komen pas na veel moeite zover, dat ze zich tot de gevorderde floristen kunnen rekenen. Voor hen is dit boekje een gids, die op enthousiaste en toch praktische wijze aangeeft, hoe deze beginmoeilijkheden het best zijn te overwinnen. Het vertelt hoe en waar gezocht kan worden, hoe het best verzameld wordt en helpt hen over de eerste moeilijkheden van het determineren heen. Het aanleggen van een herbarium wordt uiteengezet, zowel voor hogere als voor lagere planten. Verdere hoofdstukken handelen over onze grote herbaria, samenwerking met andere floristen, de inventarisatie van de Nederlandse flora, plantengeografie, geven een historisch overzicht van de kennis van onze flora en nog vele zaken meer. Ook de gevorderde florist vindt hier nog heel wat van zijn gading, al was het alleen maar dat hij hier, op praktische wijze geordend, allerlei gegevens bijeen vindt, die hem van pas kunnen komen. Het aanschaffen van dit prettig geschreven en typografisch goed verzorgde boekje wordt alle lezers van Gorteria van harte aanbevolen.

Beschreibung: Chrysosplenium alternifolium L., in the Netherlands a rare species of spring and rivulet habitats in pleistocene and older landscape of the eastern and south-eastern parts of the country, has recently been observed in a young holocene calcareous moist dune area on the island of Voorne in a hawthorn scrub at the border of an artificial rivulet. The author analyses the vegetation of the locality and considers it to be a fragmentary form of the Macrophorbieto-Alnetum cardaminetosum amarae. Since all other \xe2\x80\x9dspring indicators\xe2\x80\x9d are absent, the possibility remains that the species has been introduced by man (wild gardening). However it must be stressed that in the previous century the species occurred at several comparable localities in the calcareous dunes near Haarlem where it disappeared as a consequence of drying up of the dunes by water extraction.