University of Illinois at Chicago 
PLANTS OF JAVA 
RUBIACEAE 
Canthium horrida Schum. 
Det. By: A. McDonald, January 5, 1993 
Field Char: Weedy tree 8 m tall, branching above, 
trunk 4 cm diam. , stems bearing opposite 
thorns; flowers yellow, corolla lobes reflexed 
over calyx. 
Locality: Ujung Kulon Reserve, Genung Cibinua, 
ca. 3 km SE of Taman Jaya Girang, near a small 
rice paddy interceding forest. 
Habitat: Streamside and margin of forest, with 
Ficus, Canarium, Eugenia, Rnema, etc. 
100-150 m,006°12’S X 105°30’E 
Local Names: "Wareng" 
A. McDonald & Afriastini 3402, May 21, 1992 
This is a voucher specimen for 
anticancer and anti-AIDS screening 
NCI Sample Number(s): U44Z4502-F, U44Z4503-G 
U44Z4504-H. 
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. 
