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Penstemon tenuiflorus Pennell. Common name: Plateau Beardtongue, Limestone Beardtongue, Kentucky Beardtongue. Phenology: Apr-Jun. Habitat: Dry woodlands, glades, prairies, barrens, cliffs, especially over limestone or other calcareous rocks. Distribution: Endemic to the Interior Low Plateau of wc. KY, c. TN, n. AL, s. IN (S. Namestnik, pers.comm. 2024), extending slightly into the Coastal Plain to the west, and disjunct in the Black Belt of AL and MS.

Origin/Endemic status: Endemic

Synonymy ⓘ: = C, F, FNA17, G, K4, S, Tn, Clements, Baskin, & Baskin (1998), Estes (2012), Pennell (1935). Basionym: Penstemon tenuiflorus Pennell 1919

Links to other floras: = Penstemon tenuiflorus - FNA17

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Heliophily ⓘ: 8

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image of plant© Alan Cressler: Penstemon tenuiflorus, Nettle Glade, Ketona Dolomite, Kathy Stiles Freeland Bibb County Glades Preserve, The Nature Conservancy, Bibb County, Alabama 2 by Alan Cressler source | Original Image ⭷
image of plant© Alan Cressler: Penstemon tenuiflorus, Pool Glade, Ketona Dolomite, Bibb County, Alabama 1 by Alan Cressler source

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Horticultural Information

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