Asclepias michauxii Decaisne. Phen: May. Hab: Pine savannas. Dist: Se. NC south to peninsular FL, west to e. LA. The 1961 collection documenting this species for NC was variously misdetermined until recently as A. cinerea or A. longifolia.
Origin/Endemic status: Endemic
Synonymy: = Fl5, K1, K3, K4, RAB, S, WH3, Woodson (1954)