ALBERT

Beschreibung: The present paper is an extension of my revision of the Malaysian species of the genus Dillenia L. (Wormia Rottb. included) inserted in the revision of the Dilleniaceae in the Flora Malesiana ser. I, vol. 4, part 3, pp. 141\xe2\x80\x94174, published in December 1951. A critical revision of the whole genus has never been published before; the unfortunate result of this has been that the delimitation of Dillenia and Wormia, usually as distinct genera, has been based on different characters by various authors. The extension of the revision for the Flora Malesiana so as to include the extra-malaysian species enabled me to study a number of species, the knowledge of which certainly confirmed me in my idea that the characters on which Dillenia and Wormia had been separated before are certainly not the primary characters, to be used in the taxonomic treatment of the genus.\nAll specimens and literature mentioned in this work have been examined by me, unless indicated otherwise; excepted are the specimens of the U.S. National Herbarium., of which I have only examined those collections, of which no duplicates were available from other herbaria. Particulars, not to be taken from the herbarium specimens themselves, such as habit, height, diameter, colour, etc., have been taken from the collectors\xe2\x80\x99 notes and, as far as reliable, from the literature, and are inserted in the descriptions; if there are contradictory data, they are discussed under the Notes.

Beschreibung: Trees with leaves crowded at tip of thick branchlets; stipules subulate or narrowly deltoid, caducous; leaves, obovate or obovate-oblong, tertiary nerves ascending near the midrib, transverse near the margins of the leaf; flowers crowded at tips of branchlets, forming a pseudo-terminal, many-florous inflorescence; calyx with two whorls of two lobes each; corolla exsert, tube solid, pubescent without at apex, petals 8, imbricate; stamens 9\xe2\x80\x9440, inserted in one or two rows in the throat; style subulate, exsert, glabrous; ovary glabrous, 3\xe2\x80\x948-celled, cells 1-ovuled, ovules attached at the apex of the central axis; sometimes an indistinct annular disc present; fruit large, often edible, crowned by the persistent style; fruit usually 1-seeded; seed ovoid with large to very large scar and apical hilum; testa thick, crustaceous; albumen none or membranous, if present especially around the radicle; cotyledons fleshy; radicle inferior, not exsert \xe2\x80\x94 11 species distributed from the Moluccas to the Samoa and Tonga Islands.\nThe last revision of this genus was given by Lam in 1942. After a small but important publication of White (J. Arn. Arb. 31, 1, 1950, 104) and the investigation of some new collections it seemed appropriate to give a concise revision of this genus in preparation for the \xe2\x80\x9cFlora Malesiana\xe2\x80\x9d. Some new species are described and of some old ones more details are given. The publications of Lam are abbreviated as follows: 1925 = The Sapotaceae, etc. of the Dutch East Indies, Bull. Jard. Bot. Bzg, s\xc3\xa9r. 3, 7, 1925, 112. Lam 1927 = Further studies etc., Bull. Jard. Bot. Bzg, s\xc3\xa9r. 3, 8, 1927, 381. Lam 1932 = Sapotaceae, in Nova Guinea 14, 4, 1932, 554. Lam 1942 = A tentative list of wild Pacific Sap. etc., Blumea 5, I, 1942, 36.

Beschreibung: In January 1949 Professor H. J. Lam, director of the Rijksherbarium, Leyden, on his way to the 7th Pacific Science Congress in New Zealand, spending some time in Fiji, was shown by Mr B. E. V. Parham, Department of Agriculture, Suva, Viti Levu, Fiji Islands, a slender tree, cultivated in the Agricultural Experimental Garden Naduruloulou. The tree was unidentified and of unknown origin. Some flowering material was collected and at our request Mr Parham was good enough to send some ripe fruits in liquid for an investigation I was entrusted with.\nAdditional material was studied from the herbaria at Brisbane, Kew, Leiden, Melbourne and Paris. It is my pleasant duty to tender my best thanks to the directors of these institutes for the loan of this valuable material, among which the type.

Beschreibung: With reference to and in continuation of our elaborate announcement in Blumea VI, nr. 2, 1950, p. 544\xe2\x80\x94545, it is a pleasure to report now the publication of Vol. I, entitled: Malaysian plant collectors and collections, being a cyclopaedia of botanical exploration in Malaysia and a guide to the concerned literature up to the year 1950 by Mrs. M. J. van Steenis\xe2\x80\x94Kruseman (CLII + 639 pp., 3 maps and about 220 illustrations).\nThe General Part (roman page numbers) comprises introductory paragraphs (aim of work, interesting data and hints on labeling, lists of illustrations and literature of use to collectors and investigators, terminology of altitudinal zones, and the use of vernacular names) as well as chapters on the technique of botanical exploration and collecting, on the phytogeographical delimitation and subdivision of Malaysia, on the collections made in the area concerned (arranged both chronologically and geographically, with 1 map), statistics of collections and desiderata for further exploration with 2 maps), sources consulted for the data mentioned (literature and herbaria), and samples of handwritings of 70 collectors and botanists.

Beschreibung: As early as 1939 I started a study of Papuan Nothofagus, and since 1948 I was entrusted with the elaboration of all the material my colleagues could lay hands on. This work was repeatedly interrupted on account of official duties. Pending the full account of the work in the Journal of the Arnold Arboretum I regret that it seems necessary to safeguard my conclusions as soon as possible.