Toiyabea granitica, common names granite serpentweed[3] and Lone Mountain serpentweed, is a rare endemic plant species known only from the east side of Lone Mountain in Esmeralda County, Nevada, about 20 km (12.5 miles) west of Tonopah.[4] It grows there in the crevices of granitic outcrops.[5]
| Toiyabea granitica | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Toiyabea |
| Species: | T. granitica
|
| Binomial name | |
| Toiyabea granitica (Tiehm & L.M. Shultz) G.L. Nesom
| |
| Synonyms[1] | |
| |
Toiyabea granitica is a perennial herb growing close to the ground and forming mats. Leaves are ovate to spatulate, irregularly toothed, up to 4 cm (1.6 inches) long. Flower heads are born in racemose or corymbiform arrays. There are no ray flowers, but up to 23 yellow disc flowers.[6][7][8]
References
edit- ^ "Toiyabea granitica (Tiehm & L.M.Shultz) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 March 2024.
- ^ "NatureServe Explorer". NatureServe Explorer Tonestus graniticus. NatureServe. 2022. Retrieved 22 May 2022.
- ^ USDA, NRCS (n.d.). "Tonestus graniticus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 11 December 2015.
- ^ "Nevada Natural Heritage Program". Heritage.nv.gov. 2011-12-19. Retrieved 2014-02-13.
- ^ "Flora of North America v 20 p 184". Efloras.org. Retrieved 2014-02-13.
- ^ "Reinstatement of Tonestus (Asteraceae: Astereae)". Phytologia. 68 (3): 174–180. 2013-05-30. Retrieved 2014-02-13.
- ^ Tiehm, Arnold; Shultz, Leila M. (1985-04-01). "A New Haplopappus (Asteraceae: Astereae) from Nevada". Brittonia. 37 (2): 165–168. doi:10.2307/2806095. JSTOR 2806095. S2CID 84391260.
- ^ Cronquist, A.J. 1994. Asterales. 5: 1–496. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Publishing Co., New York.