Asclepias asperula (Decaisne) Woodson ssp. capricornu (Woodson) Woodson. Spider Antelope-horn. Phen: Mar-Sep (-Nov); Apr-Sep (-Nov). Hab: Rocky or sandy prairies. Dist: Sc. NE south through KS and OK to sc. TX and NM.
Origin/Endemic status: Native
Taxonomy Comments: Fishbein (2023) argued against treatment of this taxon at species rank because of a zone of introgression or admixture of traits in n. TX and w. OK.
Synonymy: = FNA14, K3, K4, NcTx, Tx, Woodson (1954); = Asclepias asperula var. decumbens (Nutt.) Shinners – GrPl; = Asclepias capricornu Woodson; = Asclepiodora decumbens (Nutt.) A.Gray; < Asclepias asperula – Ok
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© Aidan Campos source | Original Image ⭷
© Aidan Campos source
© Alan Cressler: Asclepias asperula, Rain Valley, Cochise County, Arizona 2 by Alan Cressler source | Original Image ⭷
© Alan Cressler: Asclepias asperula, near Brazos River and I-20, Parker County, Texas 1 by Alan Cressler source
© Aidan Campos source | Original Image ⭷
© Aidan Campos sourceFeedback
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