Asclepias subverticillata

Common in southwestern New Mexico and southeastern Arizona, usually in low wet areas near stock ponds and roadside ditches.

Inflorescence and developing fruit near Cotton City along NM 380 in Hidalgo Co., New Mexico, 18 Sep 2004.

Closer view of an inflorescence near a stock pond in the flats on the east side of the Chiricahua Mountains south of Portal, Cochise County, Arizona, 6 Sep 2004.