DIOSCOREACEAE (Yam family)

Dioscorea oppositifolia L. Chinese yam [US; Illinois; Pope County; T11S, R6E, S; 400 feet][sandy soil along waterway; August 30, 2002; Collected & identified by Shibi Chandy, Yohanes Honu, and Chuck Walker; #IL429]

Dioscorea quaternata J.F. Gmel. fourleaf yam [US; Illinois; Jackson County; T10S, R3W, S2; 37 deg. 41.047'N; 89 deg. 24.375'W; 640 feet][along trail, Little Grand Canyon; July 15, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL367]