antelope horns milkweed, spider milkweed (Asclepias asperula)

Asclepias asperula is a species in the Asclepias genus. It is commonly known as antelope horns milkweed, spider milkweed This name is accepted name for the species in the family Apocynaceae subfamily Asclepiadoideae, tribe Asclepiadeae, subtribe Asclepiadinae, . . This species is found in Arizona, California, Colorado, Idaho, Kansas, Mexico Northeast, Mexico Northwest, Nebraska, Nevada, New Mexico, Oklahoma, Texas, Utah.