Asclepias hirtella (Pennell) Woodson. Green Milkweed, Barrens Milkweed, Prairie Milkweed. Phen: Apr-Oct; Jun-Oct. Hab: Prairies (on loamy or clayey soils), sub-calcareous hardwood flatwoods. Dist: MI, WI, and MN south to w. WV (Mason County), KY, e. TN (Bradley County) (Chester, Wofford, & Kral 1997), nw. GA (Jones & Coile 1988), AR, w. LA, and e. TX.
Origin/Endemic status: Native
Taxonomy Comments: This species of midwestern prairies and barrens closely resembles A. longifolia. 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: = Ar, C, F, FNA14, GrPl, Il, K1, K4, Mi, Mo2, Ok, Tn, Woodson (1954); = Acerates hirtella Pennell – S; = Asclepias longifolia Michx. ssp. hirtella (Pennell) J.Farmer & C.R.Bell – Farmer & Bell (1985); = Asclepias longifolia Michx. var. hirtella (Pennell) B.L.Turner – K3, Turner (2009b)
Heliophily: 9
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