Penstemon calycosus Small. Long-sepal Beardtongue. Phen: May-Jul. Hab: Limestone ledges, other woodlands. Dist: OH, s. MI, IL, and se. MO (Freeman & Morse 2019) south to w. VA, GA, and AL.
Origin/Endemic status: Native
Syn: = F, FNA17, G, GW2, Il, K1, K3, K4, Mi, NE, NY, Pa, S, Tn, Va, W, Clements, Baskin, & Baskin (1998), Estes (2012), Pennell (1935); = n/a – RAB; = Penstemon laevigatus Aiton ssp. calycosus (Small) R.W.Benn. – Bennett (1963); < Penstemon laevigatus Aiton – C
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© Alan M. Cressler | Original Image ⭷
© Alan Cressler: Penstemon calycosus, Cumberland Plateau, Grundy County, Tennessee 2 by Alan Cressler source
© Richard & Teresa Ware | Original Image ⭷
© Paul Marcum source