Symphyotrichum praealtum (Poiret) Nesom var. subasper (Lindley) Nesom. Rough Willowleaf Aster. Phen: (Sep-) Oct-Nov. Hab: Loess prairies and woodlands, bottomlands, other moist habitats. Dist: KY, IN, IL, MO, and OK south to AL and TX.

Origin/Endemic status: Native

Synonymy: = Il; = Aster praealtus Poir. var. subasper (Lindl.) Wiegand – F; = Symphyotrichum praealtum (Poir.) G.L.Nesom var. subasperum (Lindl.) G.L.Nesom – K1, orthographic variant; > Aster coerulescens DC.; < Aster praealtus Poir. – NcTx, Tx; > Aster praealtus Poir. var. praealtus – C; < Symphyotrichum praealtum (Poir.) G.L.Nesom – FNA20; < Symphyotrichum praealtum (Poir.) G.L.Nesom var. praealtum – K3, K4

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