Collecting localities




Polak, Betje


(Source: Flora Malesiana ser. 1, 1: Cyclopaedia of collectors)

(Source: Flora Malesiana ser. 1, 5: Cyclopaedia of collectors, Supplement I)


Born: 1901, Amsterdam, Holland. Died: 1980, Wageningen, Gld, Holland.



Studied biology in the University of Amsterdam and took her Ph. Dr’s degree in 1929 on a thesis dealing with peat formations in Holland. Subsequently she was awarded the Buitenzorg Fund and came to the D.E. l. in 1930;1 when the Director of the Botanic Gardens, W.M. Docters van Leeuwen, went on furlough, she was temporarily attached to that institution; after his return for some time Assistant at the Medical College, Batavia. Mid-1931 she returned to Holland and was for several years Assistant in the University of Amsterdam. In 1939 she went to Java again at her own expense and was appointed peat specialist at the Soil Science Institute, Buitenzorg. In 1952 appointed Professor of Botany in the Medical College at Djakarta.4 In June 1954 she went on leave to Holland and was appointed as pedologist at Wageningen in 1955.


Collecting localities:

1930. W. Java: Telaga Saät and Telaga Warna (Poentjak) (March 3); Tjigombong (March 16); Centr. Java: Kali Lerang, S of Djokja, s.f. Sawoegaloer (Apr. 25-26); mangrove near Tjilatjap (28-30); W. Java: G. Papandajan (May 31); Centr. -Java: Diëng Plateau and Rawah Pening (Ambarawa) (Aug.); Tjilatjap; NW. Sumatra: Tapanoeli Res.; Sumatra East Coast: Bila Estate and Negri Lama Estate, etc.; P. Padang near Bengkalis (E of Sumatra); Mandau River; S. Sumatra: Palembang Res., Pladjoe; W. Borneo (Dec.): Pontianak, Singkawang, Mandor, etc.2-1931. W. Java: G. Salak (G. Boender) (Apr.).-1939. W. Java: SE. Priangan Res. at Langen Estate (Sept. 14) and Rawa Tjipanggang (Sept. 17), both part of the Rawa Lakbok;3 SE. Borneo: vicinity of Martapoera and Bandjermasin (Oct. 3-12).-1940. W. Java: G. Galoenggoeng, G. Sawal and Lake Pendjaloe. Tour to Centr. Sumatra (Indragiri), Riouw Archipelago and W. Borneo (Sept.-Oct.).-1948. W. Borneo. Cf. sub Enoh-1949. W. Borneo: from Pontianak visiting Sumur Bor, Mempawah, Andjongan, Mandor, Sungai Kunjit and Pasir Pandjang near Singkawang (between June 26 and July 3); a tour to the Kapuas and the Kapuas Lakes (Sept. 18-Oct. 30)5, e.g. near Semitau, Pulau Madjang, Danau Pentulak, Pulau Sepandan, etc.-From 1948-50 incidentally some plants in Java.



Herb. Bog. [BO]: several hundreds of plants, including the nos 70-161 from Sumatra 1930 (154-159 mosses), nos 162-315 from W. Borneo 1930, nos 401-524 from SE. Borneo 1939, nos 525-635 from Sumatra & Riouw 1940, and nos 636-733 from W. Borneo 1940. 25 Nos from G. Lawoe in E. Java in private herbarium which was moved to Herb. Bog. [BO] during World War II.

> 600 nos from above-mentioned tours (1948, 1949) in Herb. Bog. [BO]. The plants on the Kapuas tour were collected with the assistance of Main (see there). Some living plants, orchids and others, in Hort. Bog. Cf. also sub Enoh.



(1) Her sojourn resulted in the following papers: ‘Resultaten en perspectieven van botanisch veenonderzoek’ (Trop. Nat. 19, 1930, p. 182-184); ‘Ueber Torf and Moor in Niederländisch Indien’ (Verb. Kon. Akad. Wet. Amsterdam 30, 1933, p. 1-85, 10 fig.); ‘Over het voorkomen van veenafzetting in Nederlandsch Oost-Indië’ (Vakbl. Biologen 14, 1933, p. 77-87).

(2) B. Polak: ‘Een tocht in het zandsteengebied bij Mandor (W. Borneo)’ (Trop. Nat. 22, 1933, p. 23-28, 8 fig.).

(3) B. Polak: ‘The Rawah Lakbok (South Priangan Java), investigation into the composition of an eutrophic, topogenous bog’ (Contrib. no 8 of the Chuo Noozi Sikenzyoo, Bogor-Djawa 2603, 44 pp. + map).

B. Polak: ‘De Rawa Lakbok. Een eutroof laagveen op Java’ (Landbouw 21, 1949, p. 178-222, 5 photos, map).

(4) Author of: ‘Kort verslag ener tournée naar de Rawa Pening’ (Mimeographed, Bogor, 1950); ‘Construction and origin of floating islands in the Rawa Pening (Centr. Java)’ (Contr. Gen. Agr. Res. Stat. no 121, p. 1-11, 2 fig., 4 photos, map).

(5) B. Polak: ‘Verslag ener tournée naar de Kapuas en Kapuasmeren van 18 September-30 October 1949’ (Mimeographed, Bogor, 1950).