Penstemon calycosus

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Penstemon
Species:
P. calycosus
Binomial name
Penstemon calycosus

Penstemon calycosus, commonly called longsepal beardtongue,[1] is a species of plant in the plantain family (Plantaginaceae). It is native to eastern North America, where it native to the Upper South and Midwestern United States.[2] It expanded its range into the northeast United States in the early 20th century.[3] Its natural habitat is in open woodlands, prairies, and bluffs, often over limestone.[4][5]

Penstemon calycosus is an herbaceous perennial, growing to around 3 feet tall. Its flowers are lavender to purple and tubular.[5] It blooms in late spring and early summer, ranging May to July depending on latitude.[3]

Penstemon calycosus is similar to the more widespread Penstemon digitalis. P. calycosus can be distinguished from P. digitalis by its purple flowers and longer, attenuate sepals.[4]

References

  1. ↑ USDA, NRCS (n.d.). "Penstemon calycosus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 24 February 2019.
  2. ↑ "Penstemon calycosus". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 24 February 2019.
  3. 1 2 Pennell, Francis (1935). The Scrophulariaceae of Eastern Temperate North America. Philadelphia: Wickersham Printing Company. p. 215.
  4. 1 2 Chester, Edward (2015). Guide to the Vascular Plants of Tennessee.
  5. 1 2 Hilty, John (2020). "Penstemon calycosus". Illinois Wildflowers.


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