Symphyotrichum cordifolium (Linnaeus) Nesom. Heart-leaved Aster, Blue Wood Aster. Phen: Sep-Oct. Hab: Rich forests, shaded roadbanks. Dist: NB west to ON and e. ND, south to Panhandle FL and ne. TX. See Holmes & Singhurst (2021) for information on Texas occurrence.

Origin/Endemic status: Native

Synonymy: = Ar, Il, K1, K3, K4, Mi, Mo2, NE, NY, Pa, Tn, Va; = Aster cordifolius L. – C, G, S, SE1, Tat, W; < Aster cordifolius L. – RAB; > Aster cordifolius L. var. cordifolius – F, WV; > Aster cordifolius L. var. furbishiae Fernald – F; > Aster cordifolius L. var. moratus Shinners – F; > Aster cordifolius L. var. polycephalus Porter – F; > Aster cordifolius L. var. racemiflorus Fernald – F, WV; < Symphyotrichum cordifolium (L.) G.L.Nesom – FNA20; > Symphyotrichum cordifolium (L.) G.L.Nesom var. cordifolium – Nesom (1994a); > Symphyotrichum cordifolium (L.) G.L.Nesom var. polycephalum (Porter) G.L.Nesom – Nesom (1994a); > Symphyotrichum cordifolium (L.) G.L.Nesom var. racemiflorum (Fernald) G.L.Nesom – Nesom (1994a)

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Heliophily: 4