Penstemon digitalis Nuttall ex Sims. Tall White Beardtongue, Smooth Beardtongue. Phen: May-Jul; Jul-Aug. Hab: Alluvial forests, moist fields, disturbed areas, ditches. Dist: NS and ME west to MN and SD, south to e. VA, w. SC, AL, and TX. The original distribution is somewhat uncertain.

Origin/Endemic status: Native

Synonymy: = F, FNA17, G, GrPl, GW2, Il, K1, K3, K4, Mi, NcTx, NE, NY, Pa, RAB, S, Tx, Va, W, WV, Clements, Baskin, & Baskin (1998), Estes (2012), Pennell (1935); < Penstemon digitalis Nutt. ex Sims – C; > Penstemon laevigatus Aiton ssp. digitalis (Nutt. ex Sims) R.W.Benn. var. angustus R.W.Benn. – Bennett (1963); > Penstemon laevigatus Aiton ssp. digitalis (Nutt. ex Sims) R.W.Benn. var. digitalis – Bennett (1963)

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