University of Illinois at Chicago 
PLANTS OF INDONESIA 
THYMELAEACEAE 
Gonystylus borneensis (Tregh.) Gilg 
Det. By: J.S. Burley, November 5, 1989 
Field Char: Tree 7 m high, 7 cm dbh. Bark dark 
grey. Flower yellowish-brown; anthers yellow, 
stigma pale yellow. Fruit pale brown. 
Notes: Trunk bark sample. 
Locality: W Kalimantan Province, G. Bentuang 
area; 5-10 km N of Masa village, 150 km NE of 
Pontianak. 
Habitat: Mixed Dipterocarp forest on sandstone 
and yellow clay soils. Ridge system W 
of Semawang River. 
250 m, 0°52’N X 110°26’E 
J.S. Burley, Tukirin et al. 2581, June 13, 1989 
This is a voucher specimen for 
anticancer and anti-AIDS screening 
NCI Sample Number(s): Q6608499-Y, Q6608500-Z 
Q66O8501-A. 
Collected under the sponsorship of: U.S. National Cancer 
Institute, University of Illinois at Chicago, Arnold 
Arboretum (Harvard University), Field Museum of 
Natural History and Herbarium Bogoriense. 
