University of Illinois at Chicago 
PLANTS OF JAVA 
EUPHORBIACEAE 
Croton oblongus Burm.f. 
Det. By: A. McDonald, January 5, 1993 
Field Char: Solitary tree 3 m tall, branching 
above, stems at 90 degree angle to trunk; trunk 
ca. 4 cm diam., flowers maroon. 
Locality: Ujung Kulon Reserve, trail from Taman 
Jaya to Puncak Cibiun, on first rise to peak, 
4.5 km E of Taman Jaya. 
Habitat: Primary(?) forest, associated with 
Eugenia, Tabemaemontana, Horsfieldia, 
Knema, etc. , palms dominant in 
understory. 
350 m,006°12’S X 105°30’E 
A. McDonald & Afriastini 3375, May 18, 1992 
This is a voucher specimen for 
anticancer and anti-AIDS screening 
NCI Sample Number(s): U44Z3699-H, U44Z3700-I 
U44Z3701-J. 
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, LIPI. 
Please notify Field Museum Herbarium of any new 
determination of this collection, specifying that 
it is a University of Illinois at Chicago voucher. 
