Asclepias purpurascens Linnaeus, Species Plantarum 1: 214. 1753.

"Habitat in Carolina." RCN: 1775.

Lectotype (designated here by Reveal): [icon] " Apocynum floribus obsolete purpureis, corniculis resupinis" in Dillenius, Hort. Eltham. 1: 32, t. 28, f. 31. 1732. - Voucher: Herb. Sherard No. 569 (OXF) .

Current name: Asclepias purpurascens L. ( Asclepiadaceae).

Note: See Gray (in Proc. Amer. Acad. Arts 12: 67. 1876) and Britten (in J. Bot. 36: 298. 1898), who both use the expression "founded upon" (which is not acceptable as equivalent to “type”) in connection with the cited Dillenius plate.