Penstemon digitalis

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Foxglove beard-tongue
Foxglove Beard-tongue, Fletcher.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Penstemon
Species: P. digitalis
Binomial name
Penstemon digitalis
Nutt. ex Sims

Penstemon digitalis (foxglove beard-tongue[1][2] or talus slope penstemon) is a plant in the plantain family, Plantaginaceae. The flowers are white and are borne in summer. It is native to eastern Canada[1] and eastern and southeastern United States.


Close-up of a Penstemon digitalis flower blooming in Schenley Park, Pitsburgh

Penstemon digitalis is a herbaceous plant with opposite, simple leaves, on slender, purple stems. It is sometimes called beardtongue, as the stamen has small tufts of "hair".[1] It produces tubular white flowers on 2 to 3 foot stems over attractive dark green foliage. The flowers are produced in June, adding color to the prairie garden. The plant grows in any moist soil in full sun.


  1. ^ a b Dickinson, T.; Metsger, D.; Bull, J.; & Dickinson, R. (2004) ROM Field Guide to Wildflowers of Ontario. Toronto:Royal Ontario Museum, p. 332.
  2. ^ Penstemon digitalis Nutt. ex Sims foxglove beardtongue, USDA

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