CLIMBING MILKWEED VINE  
SARCOSTEMMA CYNANCHOIDES   ASCLEPIADACEAE  (MILKWEED)

ALSO CALLED: SARCOSTEMMA CYNANCHOIDES HARTWEGII, MILKWEED VINE, FRINGED TWINEVINE, NARROW LEAF MILKWEED VINE

ARIZONA WEEDS  PP.230-231

DESERT WILDFLOWERS OF NORTH AMERICA  PP. 176-177

GRAND CANYON WILDFLOWERS  P. 109

http://www.calflora.net/bloomingplants/climbingmilkweed.html

THE JEPSON DESERT MANUEL  PP. 100-112