Eupatorium hyssopifolium Linnaeus. Hyssopleaf Eupatorium. Phen: Late Jul-Oct. Hab: Woodlands and oak savannas, roadbanks, pastures, fields, disturbed areas, over calcareous and acidic substrates. Dist: MA west to nc. KY, s. IN (S. Nmestnik, pers.comm., 2022), s.IL, se. MO, south to ne. FL and se. TX.

Origin/Endemic status: Native

Synonymy: = Il, K3, NE, NY, Tn, Va, Schilling (2011a); = Eupatorium hyssopifolium L. var. hyssopifolium – Ar, C, Fl7, FNA21, G, K3, Pa, SE1, W; < Eupatorium hyssopifolium L. – RAB, Tx, WV; > Eupatorium hyssopifolium L. var. calcaratum Fernald & Schub. – F, K1; > Eupatorium hyssopifolium L. var. hyssopifolium – F, K1; > Eupatorium lecheifolium Greene – S; > Eupatorium sessilifolium L. – S

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