Collecting localities



Biographical data


Kobus, Jan Derk


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


Born: 1858, Deventer, O., Holland. Died: 1910, in the roads off Semarang, Java; buried at Pasoeroean, Java.



At first Assistant in the Experiment Station at Wageningen, and subsequently chief of the lime and gelatine factory at Delft; since 1887 in the employ of the Experiment Station for Java Sugar Industry (Pasoeroean), from 1897 holding the post of Director.

In 1890 he was charged by the D.E.I. Government to collect varieties of the sugar-cane which were immune from sereh disease, in Brit. India; the imported ones were kept in quarantine in Banka till 1896.1

Microstylis kobi J.J.Sm. was named after him.


Collecting localities:

1890. Visit to Banka and adjacent Islands.2 Sailing from Pasoeroean (July 4); Banka (12-30): from Muntok (15) to Klapa, embarking on s.s. ‘de Gier’; circumnavigating the island, visiting Toboali (trip to Lintang), the islands of Lepar and Liat, mouth of the Merawang River, Pangkal Pinang, Bakim and Kajoebesi. In later years he revisited the island on some occasions.-E. Java: G. Tengger (Oct. 1891, 1899, in 1900 with J.P. Lotsy, 1910), at Tosari, Bromo, Moengal Pass, Zandzee, Wonokitri, etc. -Centr. Java: Solo (1910).



Herb. Bog. [BO]: Banka plants; several tens of Java plants, mainly from G. Tengger. Partly in Herb. Leiden [L]; in Herb. Pasoer. [PAS now in BO]: c. 10 nos.

From letters in the archives of Leiden Herbarium it is evident that he had Banka plants collected by an assistant in 1891.



(1) cf. Arch. Suikerindustrie no 19, 1926, p. 583.

(2) J.D. Kobus: ‘Rapport over een door mij aan de eilanden Banka, Lepar en Liat gebracht bezoek’ (Meded. Proefstat. O. Java no 25, 1890).


biographical data:

In Cultura 1910 + portr.; Encyclop. N.I. 2, 1918; Arch. Suikerindustrie N.I. 1925, p. 337-338; Backer, Verkl. Woordenb., 1936; portr. in Album no II of the ‘Kon. Ned. Bot. Vereeniging’.