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Rhyssostelma nigricans
Rhyssostelma nigricans Decne. [Accepted]
Asclepiadaceae Asclepioideae Asclepiadeae
Rhyssostelma nigricans Decne.
J.P.B. Delessert, A.P. de Candolle, Icon. Select. Pl., vol. 5 : t. 75 (1846)