Draft:Penstemon breviculus
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| Penstemon breviculus | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Penstemon |
| Species: | P. breviculus
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| Binomial name | |
| Penstemon breviculus (D.D.Keck) G.T.Nisbet & R.C.Jacks., 1960
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| Synonyms | |
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Description
[edit]Penstemon breviculus is a perennial plant that grows flowering stems that usually are between 8 and 20 centimeters (3 and 8 in) tall, but infrequently may grow to 35 cm (14 in). The stems are retrorsely hairy, covered in stiff backwards facing hairs.[2]
Most of the leaves of Penstemon breviculus are basal, one that grow directly from the base of the plant.[3] Leaves range in length from 33–78 millimeters (1–3 in) and 4–10 mm (1⁄4–1⁄2 in) in width. They vary greatly in shape and may be linear, narrow and grasslike, lanceolate, shaped like a spear's head, oblanceolate, reversed lanceolate with the wider portion past the mid-point, or elliptic, having two curved sides like ellipses.[2] Usually the edges of the leaves is smooth or very shallowly toothed,[2] though rarely they may have a few teeth.[3]
The inflorescence is a 4 to 18 centimeters (2 to 7 in) long portion of the flowering stem, but usually will not exceed 11 cm (4 in). Along its length there will be three to five clusters flowers, each with a pair of attached flower groups called cymes. Each attachement point will have one to six flowers.[2] The flowers are dark blue to purple with darker purple nectar guides and covered with fine hairs externally.[3] They are 10–18 mm long and have a constricted opening with an expanded tube. The inside of the tube is covered in fine off-white to pale yellow hairs. The golden hairy staminode reaches the opening of the flower tube or slightly beyond and is 7-8 mm long.[2] It flowers in May or June.[3]
Taxonomy
[edit]The first scientific description of Penstemon breviculus was by David D. Keck as a subspecies named Penstemon jamesii subsp. breviculus in 1938. In 1960 Gladys T. Nisbet and Raymond Carl Jackson revisited its status and reevaluated it as a species under its present name.[4]
Names
[edit]Penstemon breviculus is known by the common name narrow-mouth penstemon.[3]
References
[edit]- ^ NatureServe (2024). "Penstemon breviculus". Arlington, Virginia. Retrieved 19 October 2024.
- ^ a b c d e Freeman, Craig C. (29 July 2020). "Penstemon breviculus". Flora of North America. Retrieved 18 October 2024.
- ^ a b c d e New Mexico Rare Plant Technical Council (2024) [1999]. "Penstemon breviculus (Narrow-Mouth Penstemon)". New Mexico Rare Plants. Albuquerque, New Mexico. Retrieved 19 October 2024.
- ^ "Penstemon breviculus (D.D.Keck) G.T.Nisbet & R.C.Jacks". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 18 October 2024.