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

(Source: Flora Malesiana ser. 1, 8: Cyclopaedia of collectors, Supplement II)

Born: 1879, Amsterdam, Holland. Died: 1960, Bennekom, Gld., Netherlands.

career:

Botanist, educated at Amsterdam, Zürich; and Berlin, who took his Dr’s degree in the University of Zürich; Chief of the division of Cane-breeding of the Experiment Station for Java Sugar Industry at Pasoeroean (E. Java), 1912-25; in 1925 appointed Professor of Taxonomy and Plant Geography at Wageningen Agricultural College.¹ In 1946 he was dismissed on account of collaboration with the Germans during the years of occupation.

In his early Java years he collected with his wife H.J. Hagedoorn (see there). He accompanied an American expedition to New Guinea, aiming at the collecting of unknown wild races of the sugarcane, in 1928 (see below).

Collecting localities:

1912. Centr. Java: G. Slamat with Mrs Jeswiet-Hagedoorn (Nov. 28).-1913. E. Java: Lalidjiwo (March 23-25); G. Jang (Oct. 16-24) with C.A. Backer; Sidoardjo; Goenoeng Grintjing (Oct. 27-28); Tjemara lantjang (Nov. 26).-1914. G. Tengger, Nongkodjadjar and vicinity with C.A. Backer (Oct. 3-28), Klètak Pass (Oct. 3-5), G. Lawangan (Oct. 8).-1915. Djombang, tambaks (fish ponds) (Dec. 25).-1917. Kepoeh (May 6); in the lowlands (May 20); G. Semongkrong (June 3, ? 1917).-1918. G. Tengger (Ngadisari, Tjemara Lawang, Zandzee, Bromo forest, etc.) (Aug.).-1920. G. Lamongan with C.A. Backer (March 27); Pasoeroean (Pekoentjen and Boehoe).-1921. Pasoeroean; G. Ardjoeno-Welirang (Aug.), Soekapoera on the NE. slope of G. Tengger (Sept. 18); Probolinggo (Ngepoeng); G. Semongkrong (Nov.).-1922. Pasoeroean (Pekoentjen); Loembang (Aug.); Kalimati. -1923. Pasoeroean (Pekoentjen etc.); Probolinggo; G. Ardjoeno; Banjoewangi, beach (Aug.); G. Idjen (Kawah, Ongop Ongop, Gending Waloeh, Rendjengan, Sempol, G. Kendeng) (Aug.); G. Raoeng (Aug.); G. Smeroe (Sept.); Pasoeroean (Pekoentjen, Sidohardjo).-1924. Pasoeroean; G. Smeroe.-1925. Kepoeh, Pasoeroean (March), Grissee (Apr. 3), Pasoeroean (Apr.), Soekapoera (gorge of Oemboelan, Apr. 12), Loemboeng Bajeman (Apr. 12), Grati (May), Kedawoeng (May), G. Semongkrong (May 6), Bangil (15), G. Penandjaän (16), Soerabaja (22), Soetji (22), Telaga Bodjar (22), Tangoelangan (22), Poedjon (22), Pasoeroean (June 5), Tosari (June 13), Pasoeroean (17), Soemberbrantas (19), Soekapoera (21), Kali Gombong (28), Pasoeroean (Pekoentjen, Gading, July 6), Soekapoera (8), Wijoe (12, 18), Poedjon (18), So(e)nggoriti (18), Soekapoera (19), Solo (19), Pasoeroean (July 28, Aug. 6), Kraksaän; Madoera: Sapoeloeh (Aug. 21), Amboenten (22), Karrenfelder Kepedi (23), SW of Talang, Soekalele (= Soekalila); E. Java: Sarangan (26); Centr. Java: Tjilatjap (28), G. Slamat (30), with C.A. Backer on G. Slamat (Sept.); W. Java: G. Gedeh; Pasir Datar (Sept.), Tjibodas-Tjibeureum (4-5), Buitenzorg (6); Sumatra East Coast: Perbaoengan (13), Ampelas (14), Namoe Oekoer (15), Batang Serangan (15), G. Sibajak (18).-1928. Trip to Australia and New Guinea.² S. & SE. New Guinea, Papua: arrival at Port Moresby (May 25, collecting till June 28 in the vicinity); visit to Laloki River and Rauna (= Rona) Falls (July 8); by aeroplane to the Fly River, making camp (21); Kikori; Everill Junction (23), bank of the Fly above the junction (23), Strickland River (Central Fly region, 24), Davioemboe (= Daviumbu) (27), Lake Murray (27), Kiva camp (Strickland, 31), Everill Junction (Aug. 6), Devaam (Central Fly, 6), Separa (Lower Fly), Bramble Cay (island, 16), Darn (W of Fly, 18), Oriomo River (W of Fly, 18); back at Port Moresby (18); a fortnight’s trip to Rigo River (Aug. 22-Sept.); Tinung.-1929. Singapore (May 10); P. Weh: Sabang (May); Krakatau (May 13); W. Java: G. Tangkoeban Prahoe (May), Lembang (May); Bali: Kintamani (June 30); E. Java: G. Tengger (July 5); G. Smeroe: Ajaq Ajaq (6), Ranoe Koembolo (7), above Radjopodo (9), Ranoe Pani (10), Ajaq Ajaq (10), Porrong (July 29); N. Sumatra, Atjeh:³ Baleq (Aug. 8), Paja Djorok (8), Mepar (9), Laut Tawar (9), One One (9), Boer ni Tellong (10), Baleq (11), Boer ni Tellong (12), Tingkom (13), Takengon (13), Lho Soekon (14), Idi (14), Lho Seumawe (14); P. Weh: Sabang (Aug.).

collections:

Herb. Bog. [BO]: Coll. Jeswiet-Hagedoorn and many E. Java plants; Herb. Pasoer. [PAS now in BO]: 99 nos from E. Java; Herb. Wageningen [WAG]: coll. from New Guinea (nos 36-293, in 1000 specimens), Java and Sumatra (few from 1912-17, > 2000 nos coll. Aug. 1918-29) + lists; Herb. Utrecht [U]: Java plants (1913); also dupl. in Herb. Leiden [L], and in Herb. Univ. Amsterdam [AMD].

literature:

(1) J. Jeswiet: ‘Moeilijkheden, verbonden aan het plantengeographisch werk op Java’ (Inaugural Address, Wageningen 1926).

(2) J. Jeswiet: ‘Landbouw bij de Papoea’s, speciaal van suikerriet’ (Tijdschr. K.N.A.G. 1930, p. 329, 772); ‘Met de vliegmachine op zoek naar den stamvorm van het suikerriet op Nieuw-Guinea’ (Tijdschr. Nieuw-Guinea 3, 1938/39, p. 425-427).

(3) J. Jeswiet: ‘De dennenbosschen van Atjeh’ (lecture, cf. Tijdschr. K.N.A.G. 1931, p. 89-91).

biographical data:

Wie is dat? ed. 1-4; portr. in Chron. Bot. 1, 1935, p. 27.

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