Toiyabea granitica
| Lone Mountain serpentweed | |
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| Species: | T. graniticus
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| Binomial name | |
| Tonestus graniticus (Tiehm & L.M. Shultz) G.L. Nesom & D.R. Morgan
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Haplopappus graniticus Tiehm & L.M. Shultz | |
Tonestus graniticus, common names granite serpentweed[2] 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.[3] It grows there in the crevices of granitic outcrops.[4]
Tonestus graniticus 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.[5][6][7]
References
- ^ "Tropicos". Tropicos. Retrieved 2014-02-13.
- ^ 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.