Goodwell and Texhoma, Oklahoma
Pasture and Roadside Plants

Ascelepias asperula
Antelope horns

Ascelepias asperula
Antelope horns
May 30, 2005, Caliche roadside

Compare with Asclepias arenaria

Compare with Asclepias engelmanniana

Compare with Asclepias latifolia

Compare with Asclepias viridiflora