SPIDER ANTELOPE MILKWEED
ASCLEPIAS ASPERULA   ASCLEPIADACEAE (MILKWEED)

ALSO CALLED:  ANTELOPE HORNS, INMORTAL,  AND SPIDER MILKWEED

PETERSON FIELD GUIDES SOUTHWESTERN AND TEXAS WILDFLOWERS  PP. 304-305

A FIELD GUIDE TO THE PLANTS OF ARIZONA  #793 P. 194