Penstemon rhizomatosus
| Penstemon rhizomatosus | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Penstemon |
| Species: | P. rhizomatosus |
| Binomial name | |
| Penstemon rhizomatosus N. Holmgren | |
Penstemon rhizomatosus is a rare species of flowering plant in the plantain family known by the common names Scheel Creek beardtongue[1] and rhizome beardtongue. It is endemic to Nevada in the United States, where it occurs only in the Schell Creek Range of White Pine County.[2]
This plant was first described in 1998.[3] It is a perennial herb growing up to about 28 centimeters in maximum height. The clusters of stems arise from a woody caudex and thick taproot. The leaves are lance-shaped and borne on winged petioles. They are up to 3.5 centimeters long including the petioles and are coated in short white hairs. The inflorescence is a thyrse of flowers. The flower has a hairy, glandular calyx of sepals and a purple or reddish corolla between 1 and 2 centimeters long. The staminode is hairless. Blooming occurs in June through August.[2]
This plant grows in a subalpine, or sometimes an alpine climate. It grows on rocky terrain, such as outcrops, scree slopes, and crevices in cliffs. The rock is usually limestone, or sometimes quartzite.[2]
There are six known occurrences of this plant, all located on four peaks in the central Schell Creek Range. They occur within the Humboldt-Toiyabe National Forest.[2]
References
- ↑ "Penstemon rhizomatosus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 22 September 2015.
- 1 2 3 4 Penstemon rhizomatosus. The Nature Conservancy.
- ↑ Holmgren, N. H. (1998). Two new species of Penstemon (Scrophulariaceae: sect. Saccanthera) from Nevada, U.S.A. Brittonia 50(2) 159-64.