Photo: Asclepias asperula 2.

Closeup of flowers. Sierra Vista, AZ, US. Wild. 1998-05-01.
Asclepias asperula (Dcne.) Woods. Engl.: antelope horns, spider milkweed, immortal, inmortal, spider antelope horns. Bot. syn.: Acerates decumbens Decne., Asclepias decumbens (Nutt.) Dcne., Asclepiodora decumbens (Nutt.) Gray
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Photo: Asclepias asperula 2.