Penstemon osterhoutii
| Penstemon osterhoutii | |
|---|---|
 | |
| Northwest of McCoy in Routt County, Colorado | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Penstemon |
| Species: | P. osterhoutii |
| Binomial name | |
| Penstemon osterhoutii | |
Penstemon osterhoutii, commonly called Osterhout penstemon, is an herbaceous perennial of the veronica family that is only found in the state of Colorado in the western United States.
Description
Osterhout penstemons have flowering stems that typically grow 26 to 77 centimeters (10–30 in), but are occasionally just 6 cm (2.4 in) tall.[2] Each plant will have a few or just one stem which are fairly thick, hairless, and glaucous.[3]
The flowers are funnel shaped, sky-blue to violet or lavender with red-violet floral guide lines.[2]
Taxonomy
Penstemon osterhoutii was scientifically described and named in 1920 by Francis W. Pennell. The species is part of the genus Penstemon which is classified in the Plantaginaceae family. It has no subspecies or botanical synonyms.[4]
Names
The species name is in honor of George Everett Osterhout, an amateur botanist and businessperson in the lumber trade who lived in Colorado.[5] It is similarly known by the common names Osterhout penstemon,[6] Osterhout's penstemon,[7] and Osterhout's beardtongue.[8]
Range and habitat
The Osterhout penstemon is endemic to northwestern Colorado. There is grows in Routt, Grand, Rio Blanco, Garfield, Eagle, Summit, and Pitkin counties.[2] In the past some collections of thickleaf penstemons (Penstemon pachyphyllus var. pachyphyllus) from the eastern Uinta Basin were mistakenly identified as Osterhout penstemons.[9]
See also
References
Citations
- ↑ NatureServe 2026.
- 1 2 3 Freeman 2020.
- ↑ Penland 1954, p. 504.
- ↑ POWO 2026.
- ↑ Lindgren & Wilde 2003, p. 66.
- ↑ Nelson & Williams 1992, p. 303.
- ↑ Klafehn 2022, p. 24.
- ↑ NRCS 2026.
- ↑ Cronquist et al. 1984, p. 421.
Sources
Books
- Cronquist, Arthur; Holmgren, Arthur H.; Holmgren, Noel H.; Reveal, James L.; Holmgren, Patricia K. (1984). Intermountain Flora : Vascular Plants of the Intermountain West, U.S.A.. Vol. Four. Subclass Asteridae (except Asteraceae). New York: Published for the New York Botanical Garden by Hafner Pub. Co. ISBN 978-0-89327-248-7. OCLC 320442. Retrieved 2 April 2026.
- Lindgren, Dale Tennis; Wilde, Ellen; American Penstemon Society (2003). Growing Penstemons : Species, Cultivars, and Hybrids (First ed.). Haverford, Pennsylvania: Infinity Publishing. ISBN 978-0-7414-1529-5. LCCN 2004272722. OCLC 54110971. Retrieved 4 April 2026.
- Nelson, Ruth Ashton; Williams, Roger Lawrence (1992). Handbook of Rocky Mountain Plants (Fourth ed.). Niwot, Colorado: Roberts Rinehart Publishers. ISBN 978-0-911797-96-1. OCLC 26794859. Retrieved 3 April 2026.
- Penland, C. William T. (1954). "Penstemon Mitchell, Beardtongue". In Harrington, Harold D. (ed.). Manual of the Plants of Colorado (First ed.). Sage Books. OCLC 1966260. Retrieved 4 April 2026.
Magazine articles
- Klafehn, Brad (Fall 2022). "Rare Plants Still Under Threat". Aquilegia. Vol. 46, no. 4. Colorado Native Plant Society. Retrieved 4 April 2026.
Web sources
- Freeman, Craig C. (2020) [In print 2019]. "Penstemon osterhoutii". Flora of North America. p. 122. ISBN 978-0-19-086851-2. OCLC 1101573420. Archived from the original on 20 July 2024. Retrieved 3 April 2026.
{{cite web}}: CS1 maint: periodical has ISBN (link) - NatureServe (27 February 2026). "Penstemon osterhoutii". NatureServe Explorer. Arlington, Virginia. Retrieved 3 April 2026.
- NRCS (2026). "Penstemon osterhoutii". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 April 2026.
- POWO (2026). "Penstemon osterhoutii Pennell". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 3 April 2026.