ALBERT

Description: Pendant une tournée du chalutier ”De Lanessan“ de l’Institut Océanographique de Nhatrang (Annam) vers le récif Tizard¹) en avril 1936, une collection d’algues marines a été constituée, provenant des îlots Itu-Aba, Sand Caye et Nam Yit. La situation de ces îlots est environ 10° de latitude Nord et 114° de longitude Est. Qu’il me soit permis de remercier M. R. Serène de l’Institut Océanographique de l’Indochine à Cauda par Nhatrang, qui m’a confié l’étude de cette collection.

Description: The names Blumea intermedia Koster (syn. Bl. acutata DC. var. ß) and Blumea floresiana (Schultz-Bip.) Boerl. must be kept upright. Blumea humifusa (Miq.) Clarke var. monochasialis Koster has to be changed into Blumea tenella DC. var. monochasialis (Koster) Koster, for Blumea humifusa (Miq.) Clarke is a synonym of Blumea tenella DC. Blumea lacera (Burm.) DC. var. burmanni DC. is not a clearly distinguishable variety. Blumea runcinata DC. is a synonym of Blumea lacera (Burm.) DC. Blumea fasciculata DC. is a synonym of Blumea sessiliflora Decaisne, which is not a synonym of the closely related Blumea fistulosa (Roxb.) Kurz (syn. Bl. glomerata DC. and Bl. leptoclada DC.). Blumea chinensis (L.) DC. as well as Blumea semivestita DC. are a mixture of Blumea riparia (Bl.) DC. and Blumea bullata Koster.

Description: Anne Antoinette van Bosse, fille de M. Jacob van Bosse et de Mme Jaqueline Jeanne née Reynvaan, naquit à Amsterdam le 27 mars 1852. Très jeune encore elle perdit sa mère; sa soeur, son ainée de 10 ans, prit sa place aussi bien qu’elle put. Outre cette soeur elle avait trois frères. Selon l’usage de cette époque les familles aisées n’envoyaient pas leurs filles à l’école, ainsi Anna van Bosse reçut à la maison son instruction par une institutrice de nationalité suisse. La botanique et la zoologie furent d’emblée ses branches préférées; les fréquentes visites au jardin zoologique ”Artis“ y contribuèrent pour une grande part. l’Observation des animaux exotiques lui procurait un grand plaisir et jusqu’à présent elle porte un grand intêret à ”Artis“.

Description: This extensive collection, famous among algologists both of the Old and the New World, forms part of the collections of the National Herbarium (Rijksherbarium) Leiden since 1934. About fifty years ago it was started by Mrs. Dr. A. A. WEBER-VAN BOSSE (1852—hodie), an enthusiastic pupil of HUGO DE VRIES. The colonies of Nostoc, living in the ditches round about the Dutch village of Doom, evoked her admiration, which was the primary cause of an intense study in the freshwater as well as in the marine Algae. In the harbour of Den Helder North Sea Algae were collected; by collecting Algae on trips to the French Atlantic Coasts and several times to Norway (1883—1885) and further on a South African journey (1894—1895) the herbarium grew, as it did by the Malaysian specimens collected in Java, Celebes, etc. (1888—1889). During this Malaysian tour Mrs. WEBER worked in Tjibodas, where she described the new genus Phytophysa. In Sumatra (West Coast, Lake of Manindjau) she discovered in collaboration with her husband, MAX WEBER, a new case of symbiosis between Algae and Sponges.

Description: Together with the class of the Schizomycetes (bacteria) the Cyanophyceae belong to the division of the Schizophyta which division differs from all other plant divisions by lacking a nucleus. However, the central part of their cells is a nuclear equivalent (Procaryota). This nucleoplasm or centroplasm or central body in the Cyanophycean cell has been studied profoundly these last fifteen years (Beck, Bowen, Cassel, Fuhs, Giesy, Herbst, Hutchinson, Jensen, Jost, Pankratz, Rabinovich, Sun and others) by means of the electron microscope. The resulting papers are mostly beautifully illustrated by electron micrographs. Pure cultures of Chroococcales (Gloeocapsa, Gloeothece, Pleurocapsa) as well as Hormogonales (Anabaena, Nostoc, Microcoleus, Oscillatoria, Phormidium, Symploca) have served for these investigations. The general results of these studies have provided us with a detailed picture of the nucleoplasm. The uncoloured nucleoplasm often has a fine reticulate-fibrillar texture, the anastomosing fibrils are intertwined by cytoplasm. In the nucleoplasm have been found to occur: vacuoles, opaque globular granules and polygonous bodies, which have a connection with the reticulate structure. Though the nucleoplasm contains nuclear material, the general conclusion is that there are no chromosomes and that no mitosis occurs. Only Fuhs (1958), who discovered Feulgen-positive linear filiform or bar-shaped structures in the centroplasm, about 0.2 μ in diameter, compared these with chromosomes, for their length is more or less constant and they split longitudinally into two diverging parts. He did not see any spindle-shape, however, inherent to mitosis. Cassel and Hutchinson (1954) doubt the possibility of a comparison with chromosomes since the resembling structures vary in shape and size in various cells. Several former investigators were positive about the existence of a true nucleus and chromosomes in the cell of Cyanophyceae. Kohl (1903) wrote a book about: “Organisation und Physiologie der Cyanophyceenzelle und die mitotische Teilung ihres Kernes”, in which numerous coloured figures show the mitosis and the chromosomes, observed with a light microscope. Tolypothrix lanata was used for these studies. Kohl did not see a nuclear membrane. To-day, investigators who have made electron-microscopic studies are convinced that no such a membrane between nucleoplasm and chromoplasm exists. They, however, do not at all confirm those bold conclusions concerning chromosomes and mitosis. Cell-division starts with an annular constriction of the protoplast.

Description: In het Jaarboek van de Vereniging tot Behoud van Natuurmonumenten in Nederland van 1923-1928, p. 133-142, vermeldt Prof. Stomps een aantal soorten van wieren, die gedurende 40 tochten zijn verzameld. Op een excursie, die op 4 juni jl. door Mevr. A.J. Gorter – Ter Pelkwijk en mij werd gemaakt, werd geen van deze soorten aangetroffen, tenzij zij nog te vinden zijn onder de tot nu toe niet gedetermineerde Cladophora-, Oedogonium- en Spirogyra-soorten. Op deze excursie werden gevonden: CYMOPHYCEAE: Nostoc sphaericum Vauch. ex Born, & Flah. – Veertig Morgen, drijvend. Lyngbya kützingii Schmidle – Veertig Morgen, op tussen Ranunculus (Batrachium) drijvende Cladophora. CHLOROPHYCEAE: Chaetophora elegans (Roth) Ag. – Veertig Morgen, op Bladsteel van Nuphar luteum. Oedogonium grande Kütz, – Veertig Morgen, drijvend tussen Ranunculus (Batrachium), met epiphytische Lyngbya kützingii. Aegagropila frölichiana Kütz, (syn.: Aegagropila holsatica Kütz.) – Mennegat, hij de oever, drijvend en op de bodem liggend in een laag, ongeveer 1m diep, op een zeer winderige plaats, expositie zuid. CHARACEAE: Chara aspera Willd. – bij „De Elshof”, op de bodem een zeer dichte vegetatie vormend, 3/4 m en dieper onder water. Deze soort was reeds uit het Naardermeer bekend (zie H.D. Verdam, The Netherlands’ Charophyta, in Blumea 3, 1938, p. 28). P. Leentvaar (D.L.N. 61 , 1958, p. 151-154) nam in april 1958 een aantal monsters uit het Naardermeer. In de op 4 Juni door mij genomen planktonmonsters werden soorten gevonden, die alle ook door Leentvaar vermeld worden, en bovendien Anabaena flos-aquae. Uit het op 4 Juni verzamelde plankton werden gedetermineerd CYAIJOPHYCEAE: Anacystis cyanea (Kütz.) Drouet & Daily (=Microcystis aeruginosa Kütz.); CHLOROPHYCEAE: Pediastrum duplex Meyen, Scenedesmus quadricauda (Turp.) Bréb., Mougeotia (steriel); DIATOMEAE; verder Rotatoria en Crustaceae – Wijde Blik. CHLOROPHYCEAE: Eudorina elegans Ehrenberg, Pediastrum boryanum (Turp.) Menegh. – zijtocht van Veertig Morgen. CYANOPHYCEAE: Anabaena flos-aquae Bréb. ex Born. & Flah.; CHLOROPHYCEAE: Eudorina elegans, Pediastrum boryanum, Scenedesmus quadricauda, Mougeotia (steriel), Spirogyra (steriel)? CHRYSOPHYCEAE: Tribonema; DIATOMEAE; verder Rotatoria en Crustaceae – parallel-sloot van Hoogtocht (niet schoon gemaakt). Het zoutgehalte van het water van het Naardermeer is sinds de afsluiting van de Zuiderzee in 1932 gedaald. Het water, dat, zoals Leentvaar vermeldt, in 1942 nog brak was, is nu volgens hem zeer waarschijnlijk zoet. Prof. Stomps was van mening, dat het zoutgehalte van het Waardermeer toentertijd het voorkomen van Cyanophyceae in de weg stond: “blauwwieren komen anderzijds in zout water niet voor”. Indien dit zo was, hoe zouden dan P. Frémy zijn 235 pagina’s dikke boek “Les Cyanophycées des côtes d’Europe” (over op door zeewater overspoelde plaatsen en op zeewieren groeiende blauwwieren) en A. Lindstedt zijn 122 pagina’s tellende werk “Die Flora der marinen Cyanophyceen der Schwedischen Westküste” hebben kunnen schrijven?

Description: 1.a. Achene 10-ribbed; pappus reddish (when dry) ..... 2 b. Achene angular or subterete with less than 10 ribs or not ribbed; pappus white, dingy white or reddish (when dry) .... 3 2.a. Pappus uni-seriate or nearly so ...... Decaneurum b. Pappus clearly bi-seriate ......... Lepidaploa 3.a. Pappus uni-seriate or, if bi-seriate, inner involucral scales caducous afterwards .............. 4 b. Pappus bi-seriate ............. 5 4.a. Heads many-flowered; involucral scales linear-lanceolate to oblong, acute to very pointed at the top ....... Cyanopis b. Heads 1—10-flowered; involucral scales oblong or ovate, small, obtuse at the top .......... Strobocalyx 5.a. Achene angular, glabrous or pilose; outer row of the pappus consisting of flattened setae or scales ........ 6 b. Achene terete or subterete, more or less clearly ribbed, more or less appressed pubescent; setae of the outer row of the pappus filiform Tephrodes 6.a. Heads paniculate, corymbose or few together, pedunculate, 12- to many-flowered ............. 7 b. Heads glomerate, sessile or subsessile, 2—9-flowered .. Congestae 7.a. Outer row of the pappus consisting of flattened setae. Claothrachelus b. Outer row of the pappus consisting of scales .... Lepidella

Description: Cass., J. Phys. Chim. Hist. Nat. 88 (1819) 193; Hoffmann, E. & P., Nat. Pfl. Fam. 4, 5 (1894) 172. Herbs. Leaves nearly always alternate, sometimes rosulate, mostly entire, sometimes dentate, rarely pinnatifid. Heads solitary or in inflorescences, homogamous or heterogamous; phyllaries one- to many-seriate, herbaceous or membranous; corolla of marginal flowers filiform, dentate, or ligulate, of disc flowers tubular, (4- or) 5-dentate; anthers sagittate and mostly caudate at the base; style two-armed; achene small, pappus setaceous, sometimes consisting of scales, or wanting; receptacle naked.

Description: A few types considered to be destroyed in Berlin appeared to be still existing. Consequently, a few alterations in I and II became necessary. Furthermore, the late Mr. L. J. Brass mentioned in a letter some mistakes in I to be corrected.

Description: The region, from which the Vernonieae and the Eupatorieae have been worked out, includes the Greater Sunda Islands, the Lesser Sunda Islands and the Moluccas. It is a well-known fact, that the Malay Peninsula and the Philippines have a flora, which is related to that of the Malay Archipelago, sensu stricto, belonging to the same region indeed. The Compositae of these parts have, however, been recently dealt with by RIDLEY (Fl. Mal. Pen. II, 1923, 177) and by MERRILL (Enum. Phil. Flow. Pl. III, 1923, 591) respectively, whereas those from New Guinea, which is floristically less related to the Malay Archipelago, have been worked out by MATTFELD (Engl. Bot. Jahrb. LXII, 1929, 386). The material, used for this paper, chiefly belongs to the National Herbarium (Rijksherbarium), Leiden (L), the Herbarium of the Botanical Gardens, Buitenzorg (B) and the University Herbarium, Utrecht (U); for the rest it is to be found in the Herbarium of the Royal Botanic Gardens, Kew (K) and the Herbarium of the British Museum, London (Br. M.); some specimens of the Herbarium of the Linnean Society of London and of the Herbarium of the „Conservatoire botanique de la ville de Genève” (G) have also been studied, whereas the type specimen of Vernonia arborea was discovered in the Herbarium of the Royal Botanic Garden, Edinburgh. I feel greatly indebted to the Directors of these herbaria for their kindness in putting these materials at my disposal.