Asclepias capricornu Woodson. Spider Antelope-horn. Phen: Apr-Jun (-Aug). Hab: Rocky or sandy prairies. Dist: Sc. NE south through KS and OK to sc. TX and NM.
Origin/Endemic status: Native
Synonymy: = Asclepias asperula ssp. capricornu – K3, K4, NcTx, Tx, Woodson (1954); = Asclepias asperula var. decumbens (Nutt.) Shinners – GrPl; = Asclepiodora decumbens (Nutt.) A.Gray; < Asclepias asperula – Ok
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