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Apocynaceae
Asclepias
Asclepias rusbyi
Asclepias rusbyi
(Vail) Woodson, 1954
6% complete
No common name
Ann. Missouri Bot. Gard. 61: 183 (1954)
Specifications
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Synonyms
Acerates rusbyi
Vail
Asclepias engelmanniana var. rusbyi
(Vail) Kearney