Asclepias longifolia Michaux. Phen: (Apr-) May-Jun; Jun-Jul. Hab: Wet pine savannas. Dist: DE (formerly) south to s. FL, west to e. TX.
Origin/Endemic status: Endemic
Taxonomy Comments: A. longifolia and A. hirtella are closely related; the two taxa have sometimes been treated as distinct only at the rank of subspecies (see synonymy) or as "very distinct varieties" (Turner 2009).
Synonymy: = C, F, Fl5, GW2, K1, K4, RAB, Tx, Va, WH3, Woodson (1954); = Acerates longifolia (Michx.) Elliott – G; = Asclepias longifolia Michx. ssp. longifolia – Farmer & Bell (1985); = Asclepias longifolia Michx. var. longifolia – K3, Turner (2009b); ? Acerates floridana (Lam.) Hitchc. – S