Haak, Jurriaan


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


Died: about 1920, Amsterdam, Holland.



Pharmaceutical chemist, the first director of the opium factory at Batavia; author of the first instruction book for botany in the Dutch East Indies,1 and of some papers on Rafflesia.2 Between 1883-87 he paid several visits to the island Noesa Kambangan, situated S of Central Java; at the time he was probably a resident of Semarang. When back in Holland he settled at Amsterdam.



A flower of Rafflesia in alcohol, collected by him in Noesa Kambangan, was sent to the World Exposition at Paris in 1889. A no 568, Millingtonia hortensis L.f. was collected by him in Semarang Res., Centr. Java in 1903; material in Herb. Leiden [L] (also Rafflesias in alcohol) and Herb. Bog. [BO].3 From the high number we may derive that he made a rather extensive collection. We have no data as to its location.



(1) ‘Leerboek voor plantkunde van Ned. Indië’ (1891, + atlas).

(2) ‘Iets over bet eiland Noesa Kambangan en de Rafflesia Patma Bl.’ (Weekbl. Pharmacie 3, 1885, p. 1-19, 9 fig.); ‘Observations sur les Rafflésias. Raflesia Patma Bl.’ (Semarang & Amsterdam 1889).

(3) cf. Bull. Jard. Bot. Buit. sér. 3, vol. 10, 1928/30, p. 188.