Tonestus graniticus

Lone Mountain serpentweed
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Tonestus
Species:	T. graniticus
Binomial name
Tonestus graniticus (Tiehm & L.M. Shultz) G.L. Nesom & D.R. Morgan
Synonyms[1]
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

1. "Tropicos". Tropicos. Retrieved 2014-02-13.
2. "Tonestus graniticus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 11 December 2015.
3. "Nevada Natural Heritage Program". Heritage.nv.gov. 2011-12-19. Retrieved 2014-02-13.
4. "Flora of North America v 20 p 184". Efloras.org. Retrieved 2014-02-13.
5. "Reinstatement of ''Tonestus'' (Asteraceae: Astereae).". Phytologia. Biodiversitylibrary.org. 68 (3): 174–180. 2013-05-30. Retrieved 2014-02-13.
6. "A New Haplopappus (Asteraceae: Astereae) from Nevada". Brittonia. 37: 165. 1985-04-01. doi:10.2307/2806095. Retrieved 2014-02-13.
7. 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.