User:MtBotany/sandbox

MtBotany/sandbox
Beaver Dam Wash National Conservation Area, Washington County, Utah
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Penstemon
Species:
P. petiolatus
Binomial name
Penstemon petiolatus

Description

The crevice penstemon is a low growing shrub-like plant with evergreen leaves,[2] typically growing 5 to 25 centimeters (2–10 in) tall but occasionally reaching as much as 40 cm (16 in),[3] the width can be nearly 60 cm (24 in).[4] The stems branch freely with a herbaceous character and are blue-green towards the ends and more woody with a rough texture and somewhat black in color towards the base.[5]

The blue-green leaves are somewhat thick and sharply toothed,[5] with the teeth ranging from symmetrical to somewhat asymmetrical and pointing forward.[3] Each stem can have two to four leaf pairs and all the leaves fold inward along the primary vein. [3] All but the uppermost pair of leaves are attached by petioles, short leaf stems.[4] They are 1.4–3.5 centimeters (0.5–1.5 in) in length, though usually not longer than 3 cm (1 in), and 0.6 to 1.7 cm wide.[3]

Taxonomy

In 1899 botanist Townshend Stith Brandegee described a new species in the genus Penstemon which he named Penstemon petiolatus. Together with its genus it is classified in the Plantaginaceae family and the species has no varieties or botanical synonyms.[6]

Names

The scientific name, petiolatus, is Botanical Latin describing the fact that its leaves have stems called petioles.[2] Penstemon petiolatus is known by the common name crevice penstemon,[5] but is also called the petiolate beardtongue.[3]

References

Citations

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 3 June 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 3 June 2026.
  • Welsh, Stanley L.; Atwood, N. Duane; Goodrich, Sherel; Higgins, Larry C. (1987). A Utah Flora. Great Basin Naturalist Memoirs, No. 9 (First ed.). Provo, Utah: Brigham Young University. JSTOR 23377658. OCLC 9986953694. Retrieved 3 June 2026.

Web sources

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