ALBERT

Description: Some fifty years after the Snellius I expedition (1929-1930) a Dutch-Indonesian joint expedition is carried out (1984-1985) in the Eastern Indonesian archpelago. Based on two months (September -October 1984) of research at nine different reef localities, a first report will be presented on the general morphology, composition and condition of recent and fossil reefs of these areas. The research areas that will be discussed are the following: Ambon: In the bay of Ambon fringing and patch reefs heavily damaged by silting up, caused by soi1. erosion on the island. North East Ambon an elevated reef from the old Pleistocene. Lucipara islands: Exposed very isolated atoll with some sand cays. Tukang Besi islands: Atoll reefs of Kaledupa. Binongko reef terraces; fossil cliffs modelled from massive Pleistocene reef limestone by coastal abrasion during tectonic uplift of the island; extensive reef terrace dating from the last interglacial; living reef not at the moment constructive. Sumba: East Sumba fringing reefs with influence of land and population. Young Pleistocene reef near Melolo, older terraces higher up. Komodo: Various fringing and patch reefs bordering the east side of the National Park of Komodo. Current swept reefs in the strait of Linta. Gililawa Laut and Tinandja lo~r Miocene reefs. Sumbawa: Fringing reefs in Telok Moti Toi and Sanggar bay near Tambora volcano (erupted in 1815). Coral growth in Bima bay. Pleistocene reef north east of Bima. Taka Bone Rate: Large pseudo atoll with small sand cay reefs (e.g. Tinandja) exposed reefs, coral banks and lagoons. Salayer: fringing reefs at west coast around islands Guang and Sahuluan. Pliocene reefs on both islands; Bahuluan with volcanic core. Sulawesi: Coral reef complex on the shallow shelf off South West Sulawesi, with three rows of reefs, most emerging as sand cay reefs. Because of young Holocene reg~ession in front of Ujung Pandang. Influence of sedimentation and population. Apart from these investigations during the Snellius II expedition, a long term project has been carried out since 1979 in the last area mentioned. A continuation of reef research is planned there, in close cooperation with UnHas (University of Ujung Pandang). The presentation of results will be accompanied by maps and photographs.

Description: In this precursory paper to the forthcoming Flora Neotropica monograph of Rollinia 12 new species are described. One new combination is made, and there is a note on the correct author citation for Rollinia dolabripetala. Mr. E. J. van Marle, a former student at the University of Utrecht, contributed the description of one of the new species.

Description: There exist three different kinds of leaf arrangement in neotropical species of Rinorea. 1. an alternate leaf arrangement consisting of only laminar leaves; 2. an alternate leaf arrangement consisting of laminar leaves in the apical part of the branchlets and scale-like ones subpersistent in the basal part; 3. an apparently opposite leaf arrangement consisting of laminar leaves together with a pair of inconspicuous and soon deciduous scale-like leaves at the base of the inflorescences. In this article hypotheses have been constructed how one kind of leaf arrangement can be derived from the other, how these three different kinds of leaf arrangements can be correlated with the arrangements of the inflorescences and those of the branchlets, and finally how an apparently opposite leaf arrangement also can be correlated with a so called Fagerlind tree model.

Description: -The problems of reconstructing historical relationships for areas of endemism from distributional data for groups of taxa and the cladistic relationships among the members of those groups can be solved by applying the two principles of parsimony and mutual inclusion or exclusion (compatibility) of components. Components can be extracted from a data matrix by means of transcription into partial monothetic sets. The data matrix thus derived represents the distribution over areas for the monophyletic groups in one or more cladograms. It is derived from two different matrices by boolean multiplication. The first matrix gives the binary representation of distributions of taxa over areas of endemism; the second describes the cladogram for the same taxa, in terms of character states converted into binary form by additive binary coding. The derived data matrix can be used in historical biogeography to represent the given phyletic data ( Assumption 0 here newly defined), and can be amended to reflect Assumptions 1 or 2 to accomodate the problems of wide-spread taxa and missing areas. Areacladograms are determined from the derived matrix by searching for the largest sets of mutually compatible components. Area-cladograms are evaluated in terms of support (vicariance) and contradiction (ad hoc interpretations such as dispersal and extinction). Area-cladograms that best fit the data matrix regarding the balance between support and contradiction are selected as the best possible recontructions of relationships among the areas of endemism. The procedure is illustrated by the example of the poeciliid fish genera Heterandria and Xiphophorus, and several other standard examples.

Description: Aublet based Tontelea and its only named species, T. scandens, on material he collected in French Guiana, illustrated as pl. 10 in the original publication. Aublet’s specimens are incorporated in the herbarium of J. J. Rousseau (now located in the Paris Herbarium in herbier Denaiffe) and also in the Herbarium of the British Museum. The sheet in herbier Denaiffe was identified by Lanjouw and Uittien (1940) as the original for Aublet’s pl. 10, which shows a flowering twig, analysis of a flower, and a detached leaf much larger than the leaves on the twig. From a photograph of this sheet it appears that the inflorescence is reproduced only in fragmentary form in the drawing. In the latter the inflorescence is represented as a rather short, few-branched, flowering twig, whereas in the specimen the inflorescence is strictly dichotomously branched many times with occasional supernumerary branches in the leaf axils. The sheet also has four detached leaves.

Description: This catalogue provides an annotated listing of the liverworts and hornworts from the Guianas (Guyana, Surinam, French Guiana), based on the literature and on new data that have become available in the framework of the “Flora of the Guianas” project. In total 375 species in 93 genera are recorded, including more than 100 species and 28 genera new to the Guianas. A list of synonyms (including 30 new ones), a systematic arrangement of the genera and families, and an index to the collectors are also given.

Description: This paper follows upon an earlier paper in the series “Studies in Annonaceae” (Maas et al. 1986). Twelve new species are described, viz. 2 in Duguetia, 1 in Ephedranthus, 5 in Guatteria, 2 in Hornschuchia, 1 in Tetrameranthus, and 1 in Unonopsis. A new combination is made in Enicosanthellum. Some amendments and additions to the revision of Tetrameranthus (Westra 1985), including an updated key, are given. Monocarpia euneura Miq. appears to have priority over M. marginalis (R. Scheffer) James Sincl. Additional collections have been made of the rare species Bocagea longepedunculata Martius, Xylopia crinita R.E. Fries, and Xylopia excellens R.E. Fries. Attention is drawn to several recent collections from Bahia, Brazil, which are perhaps referable to Unonopsis stipitata Diels. H. León, Popayán, and D. Sánchez S., Medellín, contributed to three of the new species.

Description: The genus Stenandriopsis was created by S. Moore in Journ. of Bot. 44: 153. 1906 for a plant collected first by Vaughan Thompson and afterwards by Baron in an unspecified part of Madagascar. As the plate by which the description is accompanied depicts the specimen collected by Baron (n. 6708), the latter is to be regarded as the type. Stenandriopsis was referred by its author to the Justicieae, but this tribe is apparently accepted by him in the delimitation it received in BENTHAM and HOOKER’s “Genera Plantarum”, and as it is in this sense a most heterogeneous mixture, this does not greatly enlighten us. Of more importance is that Moore compares it with Crossandra Salisb. and Stenandrium Nees, i.e. with genera belonging to my subfamily Acanthoideae and referred by me respectively to the Acantheae and the Aphelandreae. However, in my paper on “The Acantheae of the Malesian Area. I. General Considerations” in Proc. Kon. Ned. Akad. v. Wetensch., Ser. c. 58: 166. 1955, I pointed out that it can not belong to the Acantheae as the corolla throat lacks the incision in the adaxial side which is characteristic for that tribe. It can not belong to the Aphelandreae either as the corolla limb is subactinomorphous instead of distinctly bilabiate. As I had to rely at that time entirely on Moore’s description and on the plate by which the latter is accompanied, I was unable to arrive at a conclusion, but I suggested that the genus might represent a new tribe of my Acanthoideae. Since then I have had the opportunity to inspect in the herbarium of the British Museum of Natural History the material on which the genus was based, for which I tender my best thanks to the Keeper, and now I am able to express a more definite opinion.

Description: Protium Pullei Swart n.sp. Arbor circ. 12 m alta. Ramuli robusti 4 mm diam. teretes glabri fusci lenticellis oblongis ferrugineis muniti. Folia trifoliolata 17 (16—21) cm longa glabra, petiolis robustis semiteretibus 4.5 cm longis basi incrassatis demum transverse rimosis, petiolulis semiteretibus robustis utrinque subincrassatis 1 cm longis sed terminalibus 2.25 cm longis, foliolis oblongo-ellipticis II (7.5—13) cm longis 5 (3.75—5.5) cm latis, apice abruptius acuminatis, acumine sublineari 8 (5—10) mm longo 2.5 (2—3) mm lato, basi cuneata, margine integro, coriaceis utrinque nitidis laevibus supra glaucescentis infra viridis, nervis secundariis utrinque II, nervis prim. et sec. utrinque prominentibus. Inflorescendae axillares breves pauce ramosae pauciflorae circ. 1 cm longae. Ramuli teretes striati cum pedicellis teretibus flore aequilongis bracteis bracteolisque triangularibus obtusis densiuscule puberulis. Flores 5-meri glabri. Calyx cupuliformis lobis oblongo-triangularibus acutis tubo aequilongis. Petala valvata oblongo-triangularia acuto apiculo inflexo carnosa. Stamina 10. Discus 10-lobis glaber. Pistillum glabrum, ovario late ovoideo stigmate 5-lobo coronato. Type: Maguire 24784 in herb. NY, 17 Sept. 1944, Suriname, Tafelberg, mixed transition high-low bush, 5 km S.W. of Savanna I.

Description: The bogs of S. E. Groningen are part of the great peat-marshes extending from S. E. Drente as far as N.W. Germany inclusive. So far as the territory of Westerwolde is concerned, people have begun digging off very early. According to the map by Krayenhoff in 1816 nearly the whole peat-marsh westward from the line Blijham—Termaarsch had already been reclaimed, only a few parts still being covered with the original peat-layer (cf. map, fig. 1). The digging off east of the above line commences at the beginning of the 19th century on the borderland of Groningen and Drente. Borings were performed in three places and the samples pollenanalytically and stratigraphically examined.

Description: Zeer geachte Toehoorderessen en Toehoorders, Bij het beginnen van een wetenschappelijk onderzoek zal meestal degene die zich daaraan gezet heeft, allereerst het antwoord dienen te vinden op enkele fundamentele vragen. Zijn deze primaire vragen beantwoord, dan is de weg gebaand voor verder onderzoek en voor algemene theoretische beschouwingen. Deze fundamentele vragen zijn echter niet voor elke onderzoeker en ook niet voor elk onderzoek in een zelfde tak van wetenschap steeds gelijk. Dit hangt af van vele factoren, zoals: uiteindelijk doel van de studie, aard van het materiaal, geaardheid vooral van de onderzoeker, enz. Vandaag wil ik met U behandelen de hoofdvragen, die zich bij mij, voor de aan mij toevertrouwde onderdelen van de botanie steeds op de voorgrond plaatsen en de wijze waarop ik die beantwoorden pleeg te interpreteren voor het verdere onderzoek. Hierdoor zal ik tevens de gelegenheid hebben, om aan te stippen in welke richting wij op het gebied van de bijzondere plantkunde en de plantengeografie nog onderzoekingen kunnen verrichten, die ons inzicht in het geheel aanmerkelijk kunnen verruimen. Voor ik met mijn eigenlijke onderwerp begin, moet ik toch iets zeggen over wat „bijzondere plantkunde” is. Ik zal er niet te veel over uitweiden, daar, zoals Koningsberger en Reinders in het voorwoord van het eerste deel van het Leerboek der Algemeene Plantkunde terecht opmerken, de scheiding tussen „algemene” en „bijzondere” plantkunde uiteraard onscherp is. Volgens de letter van de gebruikelijke terminologie zou eigenlijk alles wat niet „algemeen” is thuis horen onder de bijzondere plantkunde. Zover wil ik niet gaan, want dat zou mijn taak wel heel omvangrijk maken en afgezien van het feit dat het buiten mijn kunnen zou komen te vallen, denk ik ook dat mijn collega voor de algemene plantkunde ernstige bezwaren zou maken indien ik datgene van de plantenphysiologie dat zeker niet algemeen is te noemen, voor mijzelf zou gaan opeisen. Ik wil daarom beginnen de physiologie, hoe bijzonder deze hier en daar ook moge zijn, maar onmiddellijk in zijn geheel bij de algemene plantkunde te plaatsen. Voor de rest zou ik mijn bovengenoemde definitie, dus „bijzonder” is alles wat niet „algemeen” is, in grote trekken willen volgen, met dien verstande dat ik mij natuurlijk wil houden aan de veelal gebruikelijke taakverdeling, zodat b.v. de „algemene” morphologie en anatomie van de Angiospermen, die in feite in het plantenrijk als geheel, „bijzonder” is, bij de „algemene plantkunde” wordt ondergebracht. De speciale en vergelijkende morphologie van deze groep reken ik echter zeer zeker tot de mij toegewezen tak van wetenschap. Ook de afgrenzing met de genetica is niet scherp. Indien men elk onderzoek waarbij niet uitsluitend op het phaenotype maar ook op het genotype gelet wordt, tot de genetica wil rekenen, dan zal de betrekkelijk jonge experimentele plantensystematiek of biosystematiek geen deel kunnen uitmaken van de bijzondere plantkunde. De genetici zullen het mij wel niet euvel duiden, dat ik ook deze tak van onderzoek laat staan bij de bijzondere plantkunde, waaruit zij is voortgekomen en waarvoor zij van zoveel betekenis is.

Description: Xylopia surinamensis R. E. Fr. n. sp. — Ramuli novelli dense aureo-ferrugineo-sericei, vetustiores plus minus glabrescentes et cortice densissime lenticellifero punctato vestiti; internodia 0,5—1 cm longa. Foliorum petiolus sericeo-tomentosus, 5—7 mm longus; lamina rigida, anguste lanceolata, basi rotundato-truncata, apicem versus sensim longeque attenuata, summo apice obtusa, supra ab initio glaberrima sed densissime verruculoso-punctata, subtus dense argenteosericea, 8—11 cm longa et 2—2,5 cm lata; costa supra valde impressa glaberrima, subtus prominens teres; nervi secundarii cum venulis vix conspicui. Flores in inflorescentiis densis nonnulli; bracteae numerosae, late ovatae, 1,5—2 mm longae. Sepala fere omnino coalita, calycem cupuliformem semiglobosum argenteo-sericeum 2—3 mm altum et 5—6 mm latum formantia. Petala exteriora linearia obtusa, extus argenteo-sericea, circ. 13 mm longa et 2 mm lata, prope basin subito dilatata; interiora linearia, acuta, quadrangulari-prismatica, utrinque cinereo-puberula, 12 mm longa et 1—1,2 mm crassa. Staminum filamenta 0,2 mm longa; antherae circ. 1 mm longae, locellatae, connectivi discus glaber; stamina exteriora plus minus sterilia. Pistilla numerosa (fere 30); ovaria dense sericea, circ. 1 mm longa, styli 1 mm et stigmata 1 mm longa. (Fructus ignotus). Suriname: Boschreserve, Sectio O (florifera Junio 1944. — Wood Herbarium Surinam No. 139). Typus speciei in Herb. Utrecht).

Description: E sectione Peltaea, Pavoniae speciosae H.B.K. proxima, sed forma folorium, indumento, involucri phyllis peltatis diversa. Suffrutex, caule minute stellato-piloso glabrescente, linea singula pilis simplicibus longioribus vestita in primo internodio ramulorum lateralium adaxiale notato. Folia breviter petiolata, petiolis tomentellis 2—4 mm longis, oblongo-elliptica, elliptica vel ellipticolanceolata, 3—5 cm longa, 1.25—1.5 cm lata trinervia basi acuta vel obtusa, superiora 5-nervia, basi subcordata, acutissima vel subacuminata, margine regulariter serrato-dentata, supra minute stellato-pilosa, oculo nudo glabra, infra dense sed minute stellatotomentella. Flores in axillis foliorum vel in apice ramulorum 2—3-glomeratis, bracteis ovato-triangularibus suffulti, plerumque subsessiles, interdum usque ad 4 mm pedicellati. Involucri phylla fere io linearia birta uniserialia, basi paullo connata, apice lamina foliacea peltata, id est supra basin affixa, anguste elliptica hirta, basi rotundata, apice acuta, appendiculata, 4 mm longa. Calyx cupuliformis, ultra medium incisus, 4—9 mm longus, lobis acutis hirtis, nervis trinis conspicuis, binis intermediis brevibus vel nullis. Petala 2.5—3 cm longa, teste collectore roseo-rubra, sicca rosea, basi atropurpurea. Stamina et styli more generis. Carpella 4 mm longa, mutica, dorso costa perpendiculari instructa, transverse nervosa, dense pubescentia.

Description: It is commonly accepted that percentages of pollen in a pollen diagram do not express the exact composition of forests in earlier times. This inaccuracy is due to several factors, for instance the different quantities of pollen produced by plants, the distance of transport etc. A pollen diagram tells us only the change in pollen rain on the locality where we collected soil samples. In studying a pollen diagram we find a close relation between the variations in the percentages of a certain species and the area occupied by this species in the vegetation. When the percentage of pollen of a species increases, we conclude generally that the relative area occupied by this species in the vegetation increases too. However, such a connection might be doubted. The variety of factors controlling the dispersion of pollen is so great that the interpretation of a pollen diagram often meets with great difficulties. The connection between pollen rain and the composition of the vegetation is a simple one in the cases where we are dealing with a region of uniform vegetation. A diagram taken from a region in which the vegetation varies from place to place has to be regarded with some caution. Unfortunately such a heterogenity of the vegetation exists on the very place, where we want to compose a pollen diagram. The pollen rain which falls into a bog arises from two sources: a pollen rain from the local vegetation of the bog itself and one from the surrounding vegetation. When we are dealing with great bogs, the pollen produced by the vegetation of the bog itself will be mostly that of herbaceous plants, shrubs, and spores of the Bryophyta and the Pteridophyta. It is the rule rather than the exception that the bog will be treeless. The tree pollen in such a bog mostly takes its origin from the surrounding forests. It is a fortunate circumstance in a diagram that pollen of trees is separated from other pollen. However, one exception is seen in the way in which Iversen composes a diagram for late glacial times. This method, commonly used for late glacial times, embraces a pollen sum not only containing trees but also some herbaceous plants. The origin of the latter can, with some certainty, be accepted as from outside the bog. Therefore the local vegetation of the bog does not influence the percentages of tree pollen. The pollen sum thus comprises pollen of plants which grow under the same biotic conditions.

Description: Culmi robusti, foliati. Folia lata, linearia, trinervia. Inflorescentia corymboso-paniculata, multispiculata. Spiculae (”spicae” multorum auctorum) parvae, multiflorae. Flores hermaphroditi (”spiculae androgynae” auctorum) perianthio utriculiformi, compresso, vix carinato, staminibus (”floribus masculinis monandris” auctorum) tribus, binis lateralibus tertio anteriore, ovario (”flore foemineo terminali nudo” auctorum) rostrato, basi angustato, haud stipitato, styli ramis ternis. Nux tri-costata, rugulosa. Generi Hypolytro L. C. Rich. proxima, a quo differt styli ramis tribus et nuce tri-costata. A Thoracostachyo et Paramapania, quibuscum stigmatum numero convenit, et structura florum et perianthio connato et nucis forma longe diversa, faciliter dignoscenda. Mapaniae potius affinis, sed ab omnibus speciebus huius generis inflorescentia a plerisque etiam perianthio connato discrepat.

Description: The genus Trymatococcus has been published in 1838 by Poeppig and Endlicher in Nova Genera ac Spec. Plant II. p. 30, and the genus was based on the species T. amazonicus. In 1876 Baillon added the species T. africanus to the genus. This gave a peculiar distribution for a genus with two species only: one in the Amazone region and one in West Africa. Later on several new species from Africa were described: three by Engler (T. kamerunianus, dorstenioides, and Conrauanus), one by De Wildeman (T. Gilletii) and one by Pellegrin (T. oligogyna). In 1922 (Archivos do Jardim Botanico Rio de Janeiro vol III. p. 22) Ducke described a second species from Amazonian Brazil (T. paraensis) and said in the notes to this new species that Lanessania turbinata Baill. should be transferred to the genus Trymatococcus and published a new combination (T. turbinatus Ducke). In 1925 (Archives IV. p. I) he emphasized his statements Trymatococcus and published a new combination (T. turbinatus as well as turbinatus and amazonicus have the stamens erect in the bud and not inflexed as was described in the former publications. He also emphasized that the place of Trymatococcus in the system has to be changed and the genus has to take the place taken up to this moment by Lanessania. Among the material of the Moraceae from Surinam which I am studying for the Flora of Surinam, I found also a Trymatococcus species. By the study of this genus I was struck by the peculiar geographic distribution of the genus, which fully supported my observations on the Euphorbiaceae (cf. Lanjouw, The Euphorbiaceae of Surinam pp. 70—84). For the preparation of a map of this distribution I studied the african species and after a careful examination I noted a number of important differences between the african species and the american ones. Part of these differences were never noticed before and no attention has ever been given to these facts. The first error in this case was made by Baillon. Most probably he had not seen T. amazonicus Poepp. et Endl. when he described his T. africanus. This is still more striking as he described in the same paper his genus Lanessania based on L. turbinata, which is a true Trymatococcus species. It is very curious that it was not possible for Baillonto observe his mistake because in his Histoire des Plantes (vol. VI. p. 199) he states „filamentis aestivatione inflexis vel nunc suberectis”. One can not understand why he did not observe that at least one of the species of Trymatococcus is the same as his genus Lanessania. After Baillon’s publication, we could say that we had got two type species, one american (Tr. amazonicus Poepp. et Endl.) and one african (Tr. africanus Baill.). Apparently Engler did not study exactly Tr. amazonicus Poepp. et Endl. when he described his new species though he states (Monogr. Afr. Pfl. fam. I. Morac. p. 28); ”Ein besonders auffallender Unterschied im Bau der Blüte und Frucht is nicht zu constatieren; bei der amerikanischen Art sind die männlichen Blüten dreimännig mit dreiteiliger Blütenhülle, bei den afrikanischen Arten sind sie zweimännig”. Likewise Ducke knew apparently only the american species when he pointed out the new place for this genus in the family. By these reasons only it is explained how confusion has crept into this genus. I have studied many specimens of Trymatococcus from the following herbaria: Berlin-Dahlem, British Museum (Natural History Museum), Kew, Leiden, Paris and Utrecht. I wish to express mv sincere thanks to the directors for their hospitality or fore sending the material on loan.

Description: In 1935 the present author reported the occurrence of this N. American species in the eastern part of Holland, province of Overijssel, in the vicinity of Almelo (JONKER, 1935). He found the species near the hamlet of Harbrinkhoek on a wet heath. The locality was also the only station of Wahlenbergia hederacea in the Netherlands, discovered a year before. Notwithstanding the extensive reclamations in that part of the country the species now still occurs in a number of localities around Almelo. The plants cannot be considered adventitious as they were found in places that are comparatively little influenced by human culture, judging from the occurrence, on the first-discovered locality, of e.g. Wahlenbergia hederacea. Gentiana pneumonanthe, Viola palustris, Radiola linoides, Linum catharticum, Scutellaria minor. The late Dr. Wachter discovered, in the herbarium of the Royal Botanical Society of the Netherlands, unidentified specimens of Hypericum canadense collected by Lako as early as 1909 in the same environment, perhaps even in the same station; and Dr. van Soest identified two specimens collected in 1918 by the late naturalist Bernink near Denekamp, about 20 km E of the above mentioned localities. Bouchard (1953, 1954, 1955) reported the discovery of the species in France, dept. Haute-Saône. The plants were found in large quantities, at the stony beach of oligotrophous lakes, together with Littorella uniflora. In his detailed publication of 1954 he discussed the possibilities of introduction. He concluded that the plants are not adventitious. They may be autochthonous or naturalized and then, when the latter is the fact, probably by U.S. army units that stayed in that area during world war I. He did not preclude, however, the possibility of a glacial relic. Bouchard overlooked the previous publication reporting the occurrence in Holland.

Description: Haesselia roraimensis gen. et spec. nov. (Cephaloziaceae) from the foot of Mt. Roraima (Guyana) is described and figured. The new genus has been assigned to the subfamily Trabacelluloideae together with Fuscocephaloziopsis Fulf. and Trabacellula Fulf., two other neotropical genera of Cephaloziaceae with convex leaves.

Description: Chemical analysis of representatives of about thirty genera of Lejeuneaceae has shown that the terpenoid and flavonoid content of the Lejeuneaceae is basically comparable to that of other Hepaticae and quite diversified. Among the terpenoids detected, some are common throughout the family (elemenenes, germacrenes), others are distributed more restrictedly and are indicative of evolutionary relationships among genera, e.g. borneols (Nipponolejeunea), pinguisanines (Acrolejeunea complex), striatenes (Ptychanthoideae, Omphalanthus complex), calamenanes ( Lopholejeunea) and labdanes (Ptychanthus, Tuzibeanthus). Flavonoids are present in smaller amounts than terpenoids and comprise some compounds unique to bryophytes (lutonarin, kaempferol-3-methylether). The genus Omphalanthus stands out by its total inability to biosynthesize flavonoids. At the species level the chemical constitution may vary considerably and in some species evidence for the existence of chemical races was detected.

Description: Dames en Heren, In een universitair blad kwam onlangs de mededeling voor, dat aan een hoogleraar, die zich in dezelfde moeilijkheid bevindt als ik, nl. dat hij in de loop van deze cursus 70 jaar is geworden, een afscheidscollege zou worden aangeboden. Ik vond dat een sympathiek plan. Als men met college geven, ondanks de daaraan verbonden bezwaren, de 70-jarige leeftijd heeft gehaald, is het werkelijk geen overbodige weelde dat een ander de taak voor deze laatste keer van hem overneemt.

Description: It is the fate of most historic personalities that in the course of time their work sinks almost completely into oblivion, and that the few lingering reminiscences of their achievements are transmitted to later generations in the form of second- or third-hand quotations, usually mixed with more or less anecdotic episodes from their life. It must be admitted that LINNÉ occupies in this respect a comparatively favourable position, for most educated people will remember that they heard in their school days of at least three things which are credited to him, in the first place that he produced a classification of the plant kingdom which is based on the number of stamens and carpels, the so-called sexual system, in the second place that he was the first who consistently applied the binomial nomenclature, i.e. the custom to designate an organism by a combination of two names, viz. a generic and a specific one, and thirdly that he was the originator of the pronouncement “Species to numeramus quot diversae formae in principio sunt creatae” (We count so many species as in the beginning different forms were created). Other achievements of LINNÉ may have been of greater importance, but it are these three things for which he is most generally remembered. The pronouncement quoted above, which means that the groups of individuals which form the species are descended from ancestors that owed their origin to an act of creation, derives its historic importance from the part it played in the debates on the theory of evolution. As it implies that the species are constant, it became the watchword of the antagonists. It is, however, rather strange that this pronouncement has so often been quoted, for it is found in LINNÉ’s earlier works only, and was in the later ones replaced by another statement that flatly denies the constancy of the species.

Description: Vochysia sectio Ciliantha Stafleu, subsectio Ferrugineae Warming. A V. vismiifolia Spruce ex Warming stipulis incrassatis, foliis lanceolatis longe acuminatis, floribus calcari longo modice incurvo, petalo intermedio stamen aequante, stigmate terminali parvo instructis differt. Holotypus: “coll. unknown” (comm. D. Allen) in U, fl. 14 Nov. 1953. PERU, Nanay River near Iquitos, altitude 100 m., “quillo sisa”, tree more than 100 feet high, on clayey soil about 20 feet above river (Isotypes: US 2104976, Y 47782).

Description: Recently I got the opportunity of examining a specimen from the “Rijksherbarium”, Leiden, which was provided with a label on which ROTH had written in the middle the name of the plant, viz. “ Micranthus serpyllifol-Roth ” and in the lower right corner the name of the collector, viz. “Heyne”; in the lower left comer another hand had added “Ind. or. Hb. Roth”. As the specimen proved to answer the description of Micranthus serpyllifolius given on p. 282 of ROTH’s “Novae Plantarum Species, Halberstadt 1821,” there can be little doubt that it is either the type of this species or else a duplicate of the latter. This is the more important as none of the authors who in the past ventured an opinion with regard to the taxonomic position of ROTH’s species, apparently had seen the type. ROTH’s specimen was inserted in the Leiden Herbarium under the name Andrographis serpyllifolia R.W. (Acanthaceae), but this is obviously a misidentification. for Andrographis serpyllifolia does not fit ROTH’s description. The plant described by the latter has smaller and less numerous leaves and its flowers are arranged in terminal spikes instead of solitary or a few together in the axils of ordinary leaves.

Description: Es handelt sich hier um ein grosses, zusammenhängendes Hochmoorgebiet, das sich nord-süd über 20 km, ost-west über 10 km ausdehnt. Im Süden und Westen ist es grösstenteils abgetorft. Die besonders im Zentrum und Osten noch erhaltenen Teile sind durch die intensive Trockenlegung meist verheidet; stellenweise, so in den „Engbertsdijkvenen”, wo grosse Flächen heute wenig entwässert sind, findet sich eine lebende Sphagnumdecke (Taf. III). (Lit. 5). Das Moor liegt auf pleistozänem Untergrunde (Fluvioglazial der Riss-Eiszeit und Niederterrasse der Würmeiszeit); im Osten und Westen stosst es an diluviale Rücken; im Nordwesten bildet die Niederterrasse der Vechte die Grenze. Im Südosten und Osten schliesst sich eine ausgedehnte Versumpfungszone an, während sich im Westen zwischen den Hügeln isolierte, ähnliche Bildungen vorfinden. Es handelt sich hier wahrscheinlich um ein Entwässerungsgebiet des Hochmoores. Ein prae-rissglazialer mit nördlichen Erratica bestreuter Rücken dringt vom Osten her, parallel dem Vechtetal, ungefähr bis in die Mitte, in das Moor vor. Für eine ausführliche Angabe der geologischen Verhältnisse verweisen wir auf die „Geologische Kaart van Nederland” vom „Rijks Geologische Dienst” (Blätter Almeloo I und II; Koevorden III und IV). Wir sammelten eine Anzahl Probenreihen. Die angeführten Analysen beziehen sich auf eine süd-nord gerichtete Profillinie im östlichen Teil des Gebietes (Paterswal 1 u. 2, Engbertsdijk, Bruine Haar) und ein Punktprofil im Nordwesten (Boerendijk), nahe dem Vechtetal.

Description: It is to be hoped, that the genus Pandanophyllum Hassk. never will revive, for it is based on a bad generic description and two nomina nuda, P. palustre Hassk. (Harassas tjaai) and P. humile Hassk., the first of which is supposed to indicate Mapania palustris (Steud.) Vill., while the other name has brought about much confusion, as it has been used for Hypolytrum humile (Steud.) Boeck. as well as for Mapania humilis (Miq., partly) Vill. The first validly published description of Pandanophyllum humile Hassk. nomen nudum in Cat. Pl. Hort. Bot. Bog. 1844, p. 297 has been given by Steudel in his Synopsis II (1855), p. 134 and is based upon a specimen collected in Java by Zollinger (n. 1511, Brit. Mus., Paris), belonging to the genus Hypolytrum. So this is the type-specimen of H. humile (Steud.) Boeck. in Linnaea XXXVII (1871—1873), p. 128. Bentham and Hooker, however, accepting the interpretation of Kurz in Journ. As. Soc. of Bengal XXXVIII, part 2 (1869), p. 82 and the revised opinion of Miquel in his Ill. Fl. Arch. Ind. (1871), p. 61, included both species in their section Pandanophyllum of Mapania (Gen. Pl. III, 1883, p. 1056). A quarter of a century later C. B. Clarke divided Benth. and Hooker’s section into two subgenera, viz. Pandanophyllum, including Mapania humilis Vill. and Halostemma (Wall.), including Mapania palustris (Steud.) Vill. Consequently our present section Pandanophyllum sensu Clarke probably excludes both species, which originally belonged to it. One might be inclined to rectify the mistake by changing the name of Halostemma into Pandanophyllum and coining a new name for the other subgenus, but the principal difficulty, caused by the ambiguity of Hasskarl’s generic description can not be solved in this manner. This description calls for a bifid style (perhaps referring to Hypolytrum humile Boeck.) and 3—5 spikelets (not appropriate to Mapania palustris Vill., highly improbable as to Mapania humilis Vill. and Hypolytrum humile Boeck.). The only way out of the difficulty is to reject the name Pandanophyllum as a nomen dubium in the sense of the rules of nomenclature (art. 63) and to rename the subgenus Pandanophyllum Benth. et Hook., sensu Clarke. I propose the name Pandanoscirpus.

Description: A revision has been made of the hepatic genus Brachiolejeunea (Spruce) Schiffn. (family Lejeuneaceae, subfamily Ptychanthoideae). Within this genus two subgenera were recognised: subg. Brachiolejeunea and subg. Plicolejeunea Schust. (n order to distinguish taxonomic entities within these subgenera and to evaluate their affinities, the morphology and anatomy of the gametophyte and the sporophyte have been studied. Data on cytology and sporeling development, obtained from living and cultured specimens, were added. Sporophyte characters have been studied with light microscopy (LM) and scanning electron microscopy (SEM). Besides a considerable reduction in the number of accepted species, the main result of this study is that the traditional delimitation of Brachiolejeunea cannot be maintained. The two subgenera appear to be different in many characters, several of them new, and are accordingly elevated to generic level. The genus Brachiolejeunea (4 species) now comprises only the former subgenus of that name; the generic name Frullanoides Raddi is reinstated for the subg. Plicolejeunea (7 species and 1 subspecies). For both genera the morphology and anatomy are described, the previously neglected sporophyte generation being treated in particular detail. In each of the genera a different type of sporophyte is present; a “fenestrate-type” in Frullanoides, a “nodular-type” in Brachiolejeunea. From a of the distribution patterns it appears that both genera probably originated in the western part of Gondwanaland. Brachiolejeunea is confined to that area and may presently be characterized as a Neotropical-montane element. One species of Frullanoides is pantropical, the others are neotropical. The species of Brachiolejeunea are predominantly epiphytes of mountain forests and have a rather narrow drought tolerance; the species of Frullanoides generally occur in a greater variety of habitats and have a wider drought tolerance. A consideration of generic relationships shows that the affinities of genera are very different. For both genera identification keys are provided, each species and subspecies is illustrated and for each taxon the following information is provided: synonymy with relevant literature and typification, a description, geographical distribution with distribution map, and notes on ecology, differentiation and variation. The second part of this study contains a short review of the genus Blepharolejeunea S. Arnell, which has been emended to accommodate several diverging species of Brachiolejeunea and Dicranolejeunea. Blepharolejeunea is related to both genera and is characterized as a Neotropical-montane element. In the third part of this study the sporophyte generation in the subfam. Ptychanthoideae is analysed with Scanning Electron Microscopy. Fenestratetype and nodular-type sporophytes are described and the different affinities of these types are discussed. The new tribe Brachiolejeuneae van Slageren & Berendsen is created to accommodate the genera of Ptychanthoideae with nodular-type sporophytes.

Description: Erismadelphus Mildbr. is remarkable because it is the only African genus of the Vochysiaceae, a family represented in tropical America by no less than 5 genera and 180 species. Erismadelphus was discovered in 1913 by Prof. J. MILDBREAD and has hitherto been represented by only one species: E. exsul Mildbr. Recent examination of the African collections has, however, revealed the existence of two other taxa. Unfortunately the type of E. exsul (Mildbraed s.n. from Elon, French Cameroons) was destroyed at Berlin during the 1939-45 war and no duplicates or cotypes are known to exist. In response to an enquiry Prof. MILDBREAD, to whom we are very grateful, informed one of us that in his view Corbisier 1362 from Eala in Belgian Congo was identical with his original type. Prof. MILDBRAED and KEAY have, in fact, together examined Corbisier 1362 in the Herbarium of the Jardin Botanique de l’Etat at Bruxelles through the courtesy of Prof. ROBYNS. Duplicates of Corbisier 1362 are at Kew and Paris, they agree in every respect with MILDBRAED’s original description and figure and we therefore propose that this specimen be adopted as the neotype (lectotype).

Description: During my studies of the Surinam specimens belonging to this genus my attention was drawn to the often wrong interpretation of several old species. To avoid future misidentifications it seems useful to give a short review of the American species that are known up till now. It is emphasized, however, that this paper does not have the pretension to be a monograph of the American species. For the greater part my study of the species was confined to the type material and the variability therefore is not known. However, this contribution may serve as a base for a future monograph of this interesting group. Attention is drawn to the fact that only older leaves of the plants should be studied, because the leaf apex of the younger leaves is in all species acute and the lamina may not have reached its definite form.

Description: As Prof. Bremekamp has dealt with the genus Pleiocraterium from the taxonomic point of view, I intend to supplement his exposition here with some observations on the ecology of these remarkable additions to the Malaysian mountain flora. Some of these observations have been included already in a general report on the results of the Losir expedition published in Dutch. As a further illustration I am giving two photographs taken from one of the two Sumatran species in its natural habitat. Altitude. Both species were found on the highest parts of the mountains only, viz. Pl. gentianifolium just below the summit of Mt Goh Lembuh, and Pl. sumatranum between our camp at the base of the central Peak of Mt Losir at c. 3250 m. and the summit of the latter at 3460 m. These two mountains lie rather far apart: Mt Losir is the highest top of the Barisan Range proper, whereas Mt Goh Lembuh is a more isolated mountain, rising c. 50 km. NNE of Mt Losir and separated from the latter by a wide depression. The two mountains also differ geologically.

Description: The subject of this study are soil samples taken in the “Makkumer Waard”, a wide expanse of low-lying land, which follows the Frisian coast. Stratigraphical and palynological investigations showed that in the beginning of the Atlanticum the area lay below the level of the sea, but that gradually the influence of the sea decreased and peat formation became possible. From the transition from marine deposits to Sphagnum peat (— 4,55 m to — 3,50 m) we must conclude that there has been a temporary standstill in the transgression, or even a regression, in the middle of the Atlanticum. Towards the end of the Atlantic period a sudden marine transgression followed, which deposited a layer of sand and clay on the Sphagnum peat (— 3,50 m to — 3,30 m). Shortly before the beginning of the Subboreal (which probably sets in at — 3,10 m) an important regression began and an Eriophorum peat was formed directly on the clay (—3,30 m to —3.00 m). It is probable that the peat formation went on in the Subatlanticum, but the younger Sphagnum peat is no longer present, for a third marine transgression, which lead to the formation of the “Zuiderzee”, washed away the peat and deposited the younger sea sand. The data obtained from the Makkum profile proved to agree very well with the results of other investigators who worked in the area round the North-sea.

Description: La forme est le phénomène de la vie le plus important. Aussi on pourrait croire que toute étude biologique devait commencer par la forme. En effet aucune fonction n’est imaginable indépendante de la forme, tandis qu’on peut étudier la forme indépendemment de la fonction, par exemple à des objets morts. Cependant depuis Sachs le botaniste moderne est tellement possédé par les conceptions matérialistes et mécaniques, qu’il veut aussi expliquer causalement les formes organiques en oubliant que, même si toutes les formes sont matérielles, cela ne veut pas nécessairement dire que les lois physiques et chimiques qui dominent la matière sont capables d’expliquer la forme, c.à.d. l’organisation des êtres vivants. A l’aide de briques on peut bâtir des bâtiments les plus divers, mais on peut aussi bien construire ces mêmes bâtiments de bois ou de pierre naturelle: le matériel employé n’explique pas le projet de l’architecte. Ce n’est qu’en le contemplant et en le comparant à d’autres qu’on arrive à mieux le comprendre (von Veh, p. 139). La forme („type” ou „idée” dans la conception platonique) est indépendante de la matière. Elle est ce qui reste. C’est par la forme que passe le courant de la cause et de l’effet, comme l’eau passe par un endroit clair d’une rivière (Carus). La forme présente un des problèmes les plus difficiles de la biologie. Le physiologue et le morphologue (deux extrêmes psychologiques) commencent pour ainsi dire aux deux extrémités de la nature, chacun à sa manière (Troll, Meyer), l’un avec sa méthode physique et chimique, l’autre avec sa méthode comparative. Au domaine du premier appartient tout ce qui est dynamique: le métabolisme et la croissance, au domaine du second ce qui est statique: la forme. Que la feuille est la partie principale de la plante, sur cela les physiologues et les morphologues sont d’accord. Le premier la considère comme un organe qui a pour fonctions principales la CO2-assimilation et l’évaporation. Depuis Goethe le second considère tous les appendices de la tige, aussi bien les sépales que les pétales ainsi que les organes sexuels comme des feuilles métamorphosées. Même, sous l’impression de la phyllotaxie des frères Bravais, Nees d’Esenbeck croyait que „la plante n’est rien d’autre qu’une unité de feuilles reliées entre-elles par un ordre défini”. C’est pourquoi on peut aisément considérer la morphologie de la feuille comme le problème central de toute la morphologie. Il est intéressant de se rendre compte comment dans le courant des temps on a essayé d’approcher ce problème de divers côtés. Cela pourrait apporter quelque lumière sur les différentes tendances de l’étude scientifique et sur les manières de penser qui sont caractéristiques pour les différentes périodes.

Description: This vegetation survey is the outcome of an investigation of the islands of the Netherlands Antilles carried out under the auspices of the Foundation for Scientific Research in Surinam and the Netherlands Antilles. The data on which the present study is based were obtained during a trip which lasted from September 1952 until October 1953. During this trip the following islands were visited: Curaςao, Bonaire, Aruba, St. Martin, Saba, and St. Eustatius. A short visit was also paid to the island of St. Kitts (B.W.I.). The present work gives an account of the actual vegetation of the Netherlands Antilles. Other studies, comprising the systematic results and conclusions of the survey, are being prepared, and will possibly be published in 1958.

Description: Notwithstanding the large amount of work spent by several botanists on this family, taxonomy does not appear very satisfactory, and a general agreement on generic limits has not yet been reached. The result has been a perplexing number of generic and sectional names. The present author apologizes for his adding to the number of interpretations. This study of American Sapotaceae, primarily undertaken in connection with the Flora of Surinam, could not have been completed without the generous loan of specimens by the herbaria at Brussels [B], Berlin—Dahlem [D], Kew [K], and Leyden [L]. In 1934 the author paid a short visit to the herbaria at Brussels [B] and at Paris [P]. The collections of this family at Paris are of special interest owing to the fact that they contain the material studied by Baillon, Pierre and Dubard, and bear numerous notes and analytical drawings, especially by Pierre, attached to the sheets. A number of British Guiana Sapotaceae from the Kew Herbarium was received for determination shortly afterwards. The author feels greatly indebted to the directors of the above mentioned Herbaria for their kind help, and particularly to Prof. Dr. A. Pulle, Utrecht, under whose direction this study was undertaken.

Description: In my “Notes on the Acanthaceae of Java” (in Verh. Kon. Ned. Akad. v. Wetensch., Afd. Natuurk. 2nd Sect. 45, 2: 29,1948) I discussed the three epithets that had been applied to Rumph’s “Folium tinctorum” after the latter had been transferred to the genus Peristrophe, which, as is well known, was based on this species. Nees, the author of the genus, has used the name P. tinctoria, because he regarded Justicia tinctoria Roxb. as the oldest binomial that had been applied to it. This was contested both by Merrill and by Hochreutiner. Merrill was of opinion that Justicia bivalvis L (1759) was its oldest name, but as I pointed out l.c. this binomial must be regarded as a “nomen confusum”; the description indicates a Dicliptera species, whereas the plate in the “Hortus Malabaricus” and the specimina in Burman’s herbarium to which Linné referred, represent respectively Adhatoda vasica Nees and indeed “Folium tinctorum”. Hochreutiner, on the other hand, thought, that Justicia purpurea L (1753) was identical with Rumph’s plant, but this too proved to be a mistake. J. purpurea belongs, as R. Brown already had recognized, to Hypoëstes. As the binomials proposed by Merrill and Hochreutiner therefore had to be rejected, I accepted l.c. Peristrophe tinctoria (Roxb.) Nees as the correct name. This, however, is also erroneous, for Justicia tinctoria Roxb. itself is an illegitimate name, for which already long ago a legitimate one had been substituted. J. tinctoria Roxb. (1820) is a later homonym of J. tinctoria Lour. (1790). This was recognized already by Schultes (Mantissa 1: 140, 1822), who replaced Roxburgh’s epithet by roxburghiana quoting “ J. tinctoria Roxb., Fl. Ind. ed. Car. et Wall. I p. 124, n. 13 et hoc teste: Folium tinctorum Rumph. Amb. VI 51. t. XXII. f.l” adding “nomen mutandum erat ob tinctoriam antiquissimam Lour”. As Loureiro expressly stated that the plant described by him as J. tinctoria was not the same as “Folium tinctorum” of Rumph, it is clear that J. roxburghiana Schult. must be accepted as the oldest legitimate binomial for the latter. The correct name therefore becomes Peristrophe roxburghiana (Schult.) Brem. n. comb.

Description: The genus Pausandra Radlk. belongs to the Tribe Cluytieae of the Euphorbiaceae. It was described by Radlkofer in 1870 in Flora LIII pp. 79—95. The genus is based on Thouinia Morisiana of Casaretto. In his paper Radlkofer discussed at length that this species does not belong to the Sapindaceous genus Thouinia, but represents a new genus of the Euphorbiaceae. As at that time female flowers were unknown Radlkofer stated that the systematic position of the new genus was still doubtful, but that most probably it should belong to a new subtribe of the Jatropheae. Two new species were described in the genus in 1873 by Baillon, P. Trianae Baill. based on Pogonophora Trianae Müll. Arg. which was published in 1864, and P. Martinii Baill. based on very young material and erroneously described by Baillon as being 3-merous, as will be discussed below. He placed the genus in the affinity of Argithamnia Sw., which is certainly not right as this genus is quite different both in habit and in flowercharacters. A fourth species was added by Müller Arg. in 1874 in Flora Brasiliensis XI. II., where he inserted the genus in the same group as was suggested by Radlkofer. No more species had been described when Pax published in 1911 his monograph of the Tribe Cluytieae Pax in Engler, Das Pflanzenreich IV. 147. III. He inserted the genus Pausandra Radlk, with the genera Givotia Griff, and Ricinodendron Müll. Arg. in a new subtribe Ricinodendrinae Pax. I think that this is the right position for the genus, though it could be placed in a separate subtribe for its penninerved, glanduliferous leaves and the capsular fruits. It was a pity that Pax published this monograph without studying the original material. He now copied Baillon’s bad descriptions and the lack of a thorough study on the genus caused the publication of several superfluous species in recent years. P. quadriglandulosa Pax et K. Hoffm. and P. extorris Standley described in 1919 and 1929 are the same as P. Trianae (Müll. Arg.) Baill. P. flagellorhachis Lanj. is identic with P. Martinii Baill., while it was proved that the latter species is not trimerous. P. integrifolia Lanj. could not be maintained in the genus. Only the two new species published by Ducke in 1925 were truly new ones. Moreover three new species were recognized in the recent collections made by Krukoff in Brazil. It is for all these reasons that it seemed to me highly desirable to give a new treatment of this genus. Perhaps several of the old and new species can be united, as one can find often only small differences, but for the present I think it advisable to keep them separate. Pausandra Radlk, has been described to be dioecious, but recently it has been proved in some species that they are monoecious, so it is probable that most of them are under special cicumstances.

Description: Among the most remarkable finds made by Dr. van Steenis in the higher parts of the mountains of North Sumatra are a number of cushion plants. Two of these he recognized as Rubiaceae nearly related to Hedyotis verticillaris W. et A., a species occurring in similar habitats in the Nilgiri Hills, India, and in Ceylon. Hesitating, however, to express a definite opinion on their taxonomic position, he sent the material to me for further investigation. As I had occupied myself already for some time with the genus Hedyotis L. and its allies, this investigation offered me a Wellcome opportunity to test some of the principles which I had laid down for the subdivision of this group. Apart from the characters of the fruit I lay stress on the position of the inflorescence and on the form of the stipules. The name Hedyotis itself I wish to restrict to H. fruticosa L. and its nearest allies, i.e. to those species that are provided with terminal inflorescences, an ovary not distinctly produced beyond the insertion of the calyx, and fairly large drupes with apically and ventrally dehiscent pyrenes: to a group, therefore, which roughly agrees with Hedyotis section Diplophragma W. et A.

Description: What KIAERSK wrote in 1893 in the preface of his “Enumeratio Myrtacearum Brasiliensium” is still largely valid. It is often most difficult to define a species belonging to this family, not only because, in the absence of ripe seeds, the genus is not easily ascertainable, but also because of the strong variability shown by the vegetative characters. Thanks to the examination of the rich Guiana material preserved in the herbaria of Genève, Kew, Leiden, New York, Paris and Utrecht, I have usually been able to delimit the species in a satisfactory way; their allocation to a definite genus, however, is often a difficult problem. During the preliminary stage of this investigation, which was interrupted by the war, it was of great advantage to me that I could study the Guiana specimens of the Leiden herbarium. In order to avoid misinterpretations, I have tried to base my conclusions as far as possible on an examination of either the types themselves or of duplicates of the latter. Several of these types, especially those that form part of the earlier collections of Guiana plants, e.g. of the collection Aublet, and of the collections Desfontaines (herb. Florence) and De Candolle (Genève) had never before been reexamined, and BERG, the last monographer of the South American Myrtaceae (in Linnaea XXVII (1855—56), XXIX (1858) and XXX (1861) has either neglected these species or given an, often incorrect, interpretation based on the description alone. For this reason the second part of this paper will be devoted to a short survey of these earlier types. My best thanks are due to the directors of all herbaria mentioned. Moreover, I have to thank the “Van Eedenfonds”, whose financial aid enabled me to pay a visit to Kew and to the British Museum.

Description: Recent study of the copious material of Melastomaceae conserved in the Botanisch Museum en Herbarium at Utrecht has shown the existence of several undescribed species in Surinam and has given new ideas on the taxonomic status of a few other species. These results are presented below, in advance of the treatment of the family in the „Flora of Surinam”. Ernestia Pullei Gleason, sp. nov. Suffruticosa 4 dm. alta. Caulis purpureo-brunneus 4-angulatus dense glanduloso-pubescens, internodiis 10—15 mm. longis. Petioli graciles 5—10 mm. longi glanduloso-villosi. Laminae tenues ovatae usque ad 25 mm. longae 17 mm. latae acutae minutissime serrulatae basi cordulatae 5-nerviae, supra sparse minuteque glanduloso-pilosae, subtus dense cinereo-tomentellae. Paniculae magnae terminales ramosae 8—12 cm. longae multiflorae glanduloso-polisae, bracteis minimis oblongis. Florum 4- merorum non bene conservatorum structura difficiliter et fortasse non rite observanda. Hypanthium tubuloso-campanulatum 8-costatum dense glanduloso-pilosum. Sepala erecta triangularia acuta sparse glandulosa 1.6 mm. longa. Petala non visa. Stamina valde dimorpha. Filamenta glabra erecta gracilia 3-7 mm. longa. Antherae lineari-subulatae, staminum episepalorum horizontales 4.2 mm. longae, connectivo subtereti in semicirculum 1.5 mm. diam. curvato et supra insertionem filamenti in appendices 2 V-forme connatas dilatato, ad angulam externam appendicum inserto; appendicibus in angulo interno ad filamentum affixis, triangulari-subulatis 3.2 mm. longis, infra filamentum attenuatis in calcaria filiformia et interdum calcaribus similibus lateralibus 1 vel 2 ornatis; antherae staminum epipetalorum erectae 3.3 mm. longae, connectivo ad angulam 90° deflexo 1 mm. longo, infra insertionem filamenti calcaria 2 lineari-subulata erecta 1.7 mm. longa gerente. Ovarium superum, teste cl. Pulle in schedis 3-loculare, sed in uno dissecto distinctissime 4-loculare; stylo stigmateque non visis; seminibus cochleatis.

Description: Some months ago the first author published in his Studies in Moraceae II (Rec. trav. bot. néerl. XXXIII, 1936, pp. 254—276) a synopsis of the genus Clarisia R. & P. The second author traced in the Berlin Herbarium a specimen of this genus which had been described in 1821 as Excoecaria ilicifolia Spreng. As this species is identic with Clarisia strepitans (Fr. Allem.) Lanj., the name of the latter species has to be changed. As in addition some interesting specimens were kindly sent to Utrecht for determination by the Herbaria at Berlin-Dahlem (D), Geneva (G) and the Arnold Arboretum, Jamaica Plain (A), it seemed desirable to publish these notes.

Description: In my first paper (1951) a part of the tribe Eupodostemeae was revised, viz. the genera Apinagia, Marathrum, Rhyncholacis, Lophogyne, Monostylis, Jenmaniella, Wettsteiniola and Macarenia. The second part deals with the subfamily Tristichoideae, which comprises the genera Tristicha and Weddellina, and the tribe Mourereae of the subfamily Podostemoideae, which consists of the genera Mourera, Lonchostephus, and Tulasneantha.

Description: A subdivision of pollen types based only on different dimensions is very dubious. An example is given, taken from the miocene browncoal in the Lower-Rhine area of Germany and the Netherlands.

Description: The Veluwe is a stretch of high ground in the central part of the Netherlands, north of the river Rhine and south of the IJssel Meer, i.e. the former Zuiderzee, and the polders reclaimed from the latter. Geologically the area consists of three formations: 1. ridges which owe their origin to the pressure of the land ise, and which consist of sands deposited as river sediments in preglacial times; 2. a fluvioglacial formation; on some of these plains small but steep hills are found; 3. aeolian sediments: löss and cover-sands (cf. VINK, 1949); they were deposited in the late-glacial period.

Description: Among the material collected by LANJOUW and LINDEMAN during the Suriname Expedition 1948—’49 a specimen of Mabea taquari Aubl. was found whose flowers showed some interesting deviations from the normal structure. In the “Flora of Suriname” vol. II, part 1 (1932), p. 78 LANJOUW states that the female flower of the genus Mabea Aubl. is apetalous and provided with a 5- or 6- partite calyx. In a re-investigation of the specimens preserved in the Utrecht Herbarium this could as a rule be confirmed.

Description: Endlicheria Nees (non Presl) in Linnaea 8 (1833), p. 37; id., Progr. (1833), p. 16; id., Syst. (1836), p. 365; Endl., Gen. (1837), p. 321; id., Ench. (1841), p. 197; Dietrich, Synops. Pl. 2 (1840), p. 1332, 1350; Spach, Hist. nat. Végét. X (1841), p. 473; Steudel, Nomencl. ed. 2 (1841), p. 554; Meissn., Gen. I (1836—43), p. 326, II, p. 238; Orbigny, Dict. univ. (1846), p. 259; Lindl., Veg. kgd. (1846), p. 537; Meissn. in D.C., Prodr. XV, 1 (1864), p. 172; id. in Fl. Bras. V, 2 (1866), p. 281; Baillon, Hist. II (1870), p. 480 in adnot.; Pfeiffer, Nomencl. (1873), p. 1201; Benth. in Benth. & Hook., Gen. III (1880), p. 153; Durand, Index Gen. (1888), p. 348 sub Aydendron; Mez in Jahrb. Bot. Gart. Berl. V (1889), p. 111; Pax in Engl.-Prantl, Pfl. Fam. III, 2 (1889), p. 122; dalla Torre & Harms, Gen. (1900—07), p. 178 sub Aniba; Post & Kuntze, Lexicon (1904), p. 197; Lemée, Dict. 2 (1929), p. 857; Benoist in Arch. Bot. V (1931), p. 63; Kostermans in Meded. Bot. Mus. Utrecht 25 (1936), p. 41; id. in Pulle, F1. Surin. 2 (1936), p. 327. – Goeppertia Nees, Syst, l.c., p. 354, 365 (non alibi nec aliis); Endl., Gen., l.c., p. 321, n. 2051; id., Ench., l.c., p. 197; Dietrich, l.c., p. 1332, 1350; Spach., l.c., p. 473; Steudel, l.c., p. 697; Reichb., Nomencl. (1861), p. 70, n. 2659; Meissn., Gen. I, p. 326, II, p. 238; Orbigny, l.c., p. 259; Lindl., l.c., p. 537; Meissn. in D.C., l.c., p. 172; id. in Fl. Bras., l.c., p. 281; Baillon, l.c., p. 480; Pfeiffer, l.c., p. 1473; Benth., l.c., p. 153; Durand, l.c., p. 348 sub Aydendron; Mez, l.c.; Pax, l.c., p. 122; dalla Torre & Harms, l.c., p. 178 sub Aniba; Post & Kuntze, l.c., p. 253; Kosterm. in Meded., l.c. – Schauera Nees in Lindley, Nat. Syst. ed. 2 (1836), p. 202 in adnot. (non aliis nec alibi); Endl., l.c., p. 321; id., Ench., p. 197; Meissn., Gen. II, l.c., p. 238; Orbigny, l.c., p. 259; Lindl., Veg. kgd., l.c., p. 537; Benth., l.c., p. 153; Durand, l.c., p. 348 sub Aydendron; Mez, l.c.; Pfeiffer, l.c., p. 1071; dalla Torre & Harms, l.c., p. 178 sub Aniba; Post & Kuntze, l.c., p. 503; Lemée, l.c., p. 1006. – Schaueria Nees ex Meissn. in D.C., l.c., p. 172; id. in Fl. Bras., l.c., p. 281 (non aliis); Baillon, l.c., p. 480; Pax, l.c., p. 122. – Ampelodaphne Meissn. in D.C., l.c., p. 81; id. in Fl. Bras, l.c., p. 167; Baillon, l.c., p. 473; Pfeiffer, l.c., p. 1071; Benth., l.c., p. 153; Durand, l.c., p. 348 sub Aydendron; Pax, l.c., p. 122; dalla Torre & Harms, l.c., p. 178 n. 2812; Post & Kuntze, l.c., p. 24; Lemée, Dict., l.c., p. 210; Kosterm. in Meded., l.c. – Aydendron Griseb. (non Nees), p.p. in Fl. Brit. W. Ind. isl. (1860), p. 284; Benth., l.c., p. 153; Mez, l.c. – Huberodaphne Ducke in Arch. Jard. Rio de Janeiro 4 (1925), p. 191; Lemèe, Dict., l.c., 3 (1931), p. 661. Type species: Endlicheria hirsuta Nees.

Description: Anaueria Kosterm. in Chronica Botanica IV, 1 (1938), p. 14. Arbores brasilienses foliis sub-oppositis. Flores hermaphroditi ex-involucrati paniculati; tepalis sex tribus exterioribus minoribus. Stamina novem quorum sex exteriora fertilia filamentis in annulum ovarium cingentem connatis antheris liberis bilocellatis sub-introrsis; tria interiora sterilia staminodialia sub-aequilonga. Ovarium subglobosum tubo planiusculo insertum, stylo obtuso brevi stigmate inconspicuo. Staminodia seriei quartae nulla. Bacca magna ellipsoidea pedicello vix elongate cylindrico tepalis non incrassatis persistentibus insidens.

Description: Zu meiner Bearbeitung des surinamischen Materials der Gentianaceae für die von Pulle herausgegebene „Flora of Surinam” gehören nog einige kritische Bemerkungen. Ich muszte z.B. in einigen Fällen von der von Gilg in Engler und Prantl, Nat. Pflanzenfamilien gegebenen Einteilung der Gattungen und deren Umgrenzung abweichen. Auch stellte es sich heraus, dasz sich unter dem Material eine neue Art befand, deren Beschreibung und Abbildung unten folgen.

Description: As has been stated in the introduction of the second part, this third part will include the remainder of the American part of the tribe Eupodostemeae of the subfamily Eupodostemoideae which was not treated in part I, viz. the genera Oserya, Devillea, Ceratolacis, Mniopsis, Podostemum and Castelnavia. Included are the dubious genera, and it also contains additions and corrections to part I, latin descriptions of new taxa, a list of collectors’ numbers in this part, new references to the literature, and a general index to the third part. The attention of the reader is drawn to a publication of SZAFER (1952) in which a fossil Podostemacea from Europe has been described. As I have not seen the material it is at present impossible to judge the value of the discovery though it seems highly improbable that Podostemaceae ever lived in Europe.

Description: Juniperus macropoda Boiss. Fl. Orient. V (1884) p. 709; Hooker Fl. Br. Ind. V (1890) p. 647. Umlung (Thalam-buti valley) 4200 m, 28 July no. 58. Big shrubs.