Penstemon dasyphyllus
| Penstemon dasyphyllus | |
|---|---|
| |
| Cochise County, Arizona | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Spermatophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Penstemon |
| Species: | P. dasyphyllus
|
| Binomial name | |
| Penstemon dasyphyllus | |
| Synonyms[2] | |
| |
Penstemon dasyphyllus, commonly called grama grass penstmon or Gila penstemon, is a plant species from the southwestern United States and northern Mexico.
Description
[edit]Grama grass penstmon has flowering stems that grow 20 to 50 centimeters (8–20 in) tall and are covered in stiff, backwards pointing hairs near their base and are puberulent or glandular-pubescent, covered in small, fine hairs or ones that are glandular, towards the top.[3] The leaves are also puberulent or retrorsely hairy, covered in backwards pointing hairs, though sometimes only along the vein in the middle of the leaf and along the edges. The basal leaves and the lowest leaves on the stems measure 2.8–6.8 cm long, but just 3–9 millimeters wide.[3] The basal leaves are absent when it beings to flower.[4]
The flowers are blue or somewhat purple and covered in glandular hairs with the lower three lobes much larger than the upper two.[5] The somewhat swollen fused petal tube measures 2.5–3.5 cm long. The flowers are four to eleven groups along the inflorescence and all face in one direction away from the stem. It can bloom as early as April or as late as September in its native habitat, but usually not later than July.[3]
The fruit is a capsule that is 1.1–1.5 cm long and 0.7–0.9 cm wide.[3]
It is very similar to Sonoran penstemon (Penstemon stenophyllus), another penstemon that grows on both sides of the border, other than the hairless leaves.[6]
Taxonomy
[edit]Penstemon dasyphyllus was scientifically described and named in 1859 by Asa Gray. It is classified as a Penstemon within the Plantaginaceae family. It has no botanical varieties, but was later described as a variety of Penstemon stenophyllus by Asa Gray in 1886. It has one other botanical synonym from 1888, Penstemon pringlei published by Sereno Watson.[2]
Names
[edit]In Botanical Latin dasyphyllus means 'with hairy leaves'.[7] Penstemon dasyphyllus is known by the common names grama grass penstmon and Gila penstemon.[5][8]
Range and habitat
[edit]This species is native to three US states and five states in Mexico.[9] In the United States it grows in five western Texas counties Brewster, Crockett, Pecos, Presidio, and Terrell. In southwestern New Mexico it only is found in Hidalgo and Luna counties, but in southeastern Arizona it is known from Cochise, Gila, Pima, Pinal, and Santa Cruz.[3] It grows in the Mexican states of Sonora, Chihuahua, Coahuila, Nuevo León, and San Luis Potosí.[9]
It is found at elevations of 1,100–1,700 meters (3,600–5,600 ft) on rocky ridges and gravelly slopes in desert grasslands.[3]
See also
[edit]References
[edit]Citations
[edit]- ^ NatureServe 2026.
- ^ a b POWO 2026.
- ^ a b c d e f Freeman 2020.
- ^ Nold 1999, p. 120.
- ^ a b Heflin 1997, p. 17.
- ^ Way & James 1998, pp. 87–88.
- ^ Brittain & Gordon 2005, p. 65.
- ^ Lindgren & Wilde 2003, p. 34.
- ^ a b Hassler 2026.
Sources
[edit]Books
[edit]- Brittain, Julia; Gordon, Sue, eds. (2005). Plant Names Explained: Botanical Terms and Their Meaning. Boston, Massachusetts: Horticulture Publications. ISBN 978-1-55870-747-4. OCLC 59823370. Retrieved 21 March 2026.
- Heflin, Jean (1997). Penstemons : The Beautiful Beardtongues of New Mexico. Albuquerque, New Mexico: Jackrabbit Press. ISBN 978-0-9659693-0-7. OCLC 39050925. Retrieved 21 March 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 22 March 2026.
- Nold, Robert (1999). Penstemons. Portland, Oregon: Timber Press. ISBN 978-0-88192-429-9. OCLC 44962199.
- Way, David; James, Peter (1998). The Gardener's Guide to Growing Penstemons. Newton Abbot, England; Portland, Oregon: David & Charles; Timber Press. ISBN 978-0-88192-424-4. OCLC 38879416. Retrieved 21 March 2026.
Web sources
[edit]- Freeman, Craig C. (5 November 2020) [In print 2019]. "Penstemon dasyphyllus". Flora of North America. p. 109. ISBN 978-0-19-086851-2. OCLC 1101573420. Archived from the original on 21 March 2026. Retrieved 21 March 2026.
- Hassler, Michael (13 March 2026). "Penstemon dasyphyllus in Synonymic Checklist and Distribution of the World Flora. Version 26.03". World Plants. Retrieved 21 March 2026.
- NatureServe (27 February 2026). "Penstemon dasyphyllus". NatureServe Explorer. Arlington, Virginia. Retrieved 21 March 2026.
- POWO (2026). "Penstemon dasyphyllus A.Gray". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 March 2026.
External links
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