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

Died: 1927, Buitenzorg, Java.

career:

An Indonesian, for many years ‘mantri’ of the Herbarium at Buitenzorg; he attended numerous expeditions.

Gymnacranthera ibutii Holth. (ms.) andMicrotatorchis iboetii J.J.Sm. were named after him.

Collecting localities:

1921. S. Sumatra, Lampong Districts: G. Rate Telanggaran (Nov. 12-18), G. Raté Berenong (18-29), Wai Lima Estate (Dec. 1-15).-1922. Attending the Danish expedition to the Kai Islands, visiting the Aroe Islands (Dobo) and Ambon too (cf. sub Hj. Jensen and Mortensen).-1924. With C.B. Kloss (see there) and H.H. Karny to the Mentawei (= Mentawai) Islands, W of Sumatra: P. Siberoet (Sept. 8-Oct. 31).-1925. With K.W. Dammerman (see there) to Soemba (Lesser Sunda Isls) (March 14-May 26): Waingapoe and environs; excursions along the Kambera; Waikelo (Apr. 5); staying at Karoni, trips to Totoka, Palla, Waikaboebak, Waikelo; Waingapoe, via Melolo, Mao Marroe (May 3-13), Kananggar and vicinity, Lai Rondja, lake on the southern slope of Waidjelo Valley; setting out from Kananggar (25) via Penang to Waingapoe.-1926. He accompanied H.J. Lam (see there) to Celebes, the Moluccas, etc.

collections:

Herb. Bog. [BO]: 504 nos S. Sumatra, 562 nos (1-562) P. Siberoet,¹ ± 570 nos Soemba;² Herb. Utrecht [U]: dupl. Mentawai Isls (1924). For the collection of the Kai Islands etc., cf. sub Hj. Jensen.

literature:

(1) R.E. Holttum: ‘Spolia Mentawaiensia Pteridophyta’ (Journ. Mal. Br. Roy. As. Sue. 6, 1928, p. 14-23).

(2) O. Posthumus: ‘On the ferns of Sumba’ (Proc. Kon. Akad. Wet. Amsterdam 33, 1930, p. 871-875).

biographical data:

Blumea 5, 1942, p. 145.

photo gallery: