Collecting localities



Biographical data

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Molengraaff, Gustaaf Adolf Frederik


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


Born: 1860, Nijmegen, Gld, Holland. Died: 1942, Wassenaar, Z.H., Holland.



Geologist, educated at Leiden and Utrecht (Ph. Dr 1886); continuing his study at the University of Munich, 1887-88; Lecturer in Geology etc. (1888-91) and subsequently Professor (1891-97) at Amsterdam; Government Geologist of the S. African Republic, 1897-1902; Consulting Geologist at Johannesburg, 1902-05; Professor at the Technical College of Delft, 1906-30.

He made an expedition in Borneo (see below), making a small botanical collection after the departure of Hallier.1


Collecting localities:

Borneo Expedition, 1893-94.1 For the 1st part of the expedition cf. sub H. Hallier and A.W. Nieuwenhuis.2 After the departure of Hallier, from Poetoes Sibau (June 15, 1894) to the mountainous country of Upper Embalau; Na Boengan (23); Na Boelit (28), Pangkalan Mahakkam (July 3); Sg. Penanei (14) (on the way climbing Bt Betoeng = Bt Lekoedjan); back to Pangkalan Mahakkam (18); Poetoes Sibau (22);3 from Smitau (Aug. 7) to the mountainous country between Oeloe Seberoeang and Oeloe Embahoe; Bt Oeian (10); Batoe Raoeng (11); Bt Pijaboeng (summit on the 15th); Bt Ampan and back to S(e)mitau (19); Sintang (20); Nanga Pinoh; Sintang (-Sept. 2); Smitau; Boenoet (5); Na Sebelit; Bt Oendau; Bt Sekoedjan pr.p.; Bt Loeboek (11); Lematak, Goeroeng Pelai, the Pangkalan Kapala Riam, Goeroeng Nakan, Goeroeng Benoewang (15); near the Pangkalan Paneh, proceeding by land (16); ridge Bt Beransa; the Babar Hantoe; Madi Mts; Sg. Paneh (22); Bt Sedaroeng (30); Na Moribooi; G. Raja (summit Oct. 5-6) and Bt Tjondong in the Schwaner MIS; Moribooi (9); the Oeloe Kowin (12); Sg. Samba (17); mountain excursion in the vicinity of Toembang Habangooi; Bt Tandok (21); going down the Katingan (= Mendawai) to the Java Sea; from Pegattan (Oct. 30) to Bandjermasin (Nov. 1) by boat, and from there returning to Java. Before setting out on the home voyage, he was once more at Sintang with a view to the collections.4



Herb. Bog. [BO]: 25 nos from Bt Raja (2000 m alt.) and Bt Tjindong or Tjondong (1000 m), numbered in continuation of those of Hallier and accordingly upwards of 3000. Evidently the collection included some ferns.5



(1) Author of: ‘Die niederländische Expedition nach Zentral-Borneo in den Jahren 1893 and 1894’ (Peterm. Mitt. 1895, p. 201-208, pl. 14); ‘De Nederlandsche expeditie naar Centraal-Borneo in 1894’ (Hand. Ned. Natuurk. en Geneesk. Congr. 5, 1895, p. 498); ‘Borneo Expeditie. Geologische verkenningstochten in Centraal Borneo (1893-1894)’ (1900, + atlas, 3 maps, 56 pl. and 89 textfig.); ‘Iets over de rivieren van het eiland Borneo in verband met zijn geologische gesteldheid’ (Hand. Ned. Nat. en Geneesk. Congr. 12, 1909, p. 700); and several other geological papers on the Dutch East Indies.

(2) cf. also Tijdschr. K.N.A.G. 1894, p. 642-643 and 858-859; and Bull. Mij Bevord. Natuurk. Onderz. Ned. Kolon. nos 12 and 13.

(3) cf. Tijdschr. K.N.A.G. 1894, p. 1008-1012 and Bull. Mij l.c. no 15.

(4) cf. Tijdschr. K.N.A.G. 1895, p. 113-133.

(5) cf. Christ in Ann. Jard. But. Buit. 20, 1907, p. 92-140.


biographical data:

Tijdschr. K.N.A.G. 37, 1920, p. 575 and l.c. 59, 1942, p. 471-473; Wie is dat? 1935, p. 254; Geologic en Mijnbouw 2, 1940, p. 41 + portr. and l.c. p. 283, portr. p. 285; Jaarb. Ned. Akad. Wet. Amsterdam 1941/42, p. 185-191 + portr.; Ned. Kruidk. Arch. 51, 1941, p. 363; l.c. 52, 1942, p. 398.


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