Penstemon tubaeflorus Nuttall. Trumpet Beardtongue. Phen: May-Jun. Hab: Prairies, glades, forest openings, fens, disturbed areas. Dist: Sw. OH, IN, WI, IA, and NE south to w. KY, w. TN, MS, LA, and e. TX; also known from adventive sites farther east, as in e. PA (Rhoads & Klein 1993).

Origin/Endemic status: Native

Synonymy: = C, FNA17, G, Il, K4, NcTx, NY, Tn, Tx, Clements, Baskin, & Baskin (1998), Estes (2012), Pennell (1935); = n/a – Pa; = Penstemon tubiflorus Nutt. – Ar, K3, NE, S, orthographic variant; > Penstemon tubaeflorus Nutt. var. achoreus Fernald – F, GrPl; > Penstemon tubaeflorus Nutt. var. tubaeflorus – F, GrPl; > Penstemon tubiflorus Nutt. var. achoreus Fernald – K1, orthographic variant; > Penstemon tubiflorus Nutt. var. tubiflorus – K1, orthographic variant

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Heliophily: 9