Toiyabea granitica

Toiyabea granitica
Scientific classification Edit this 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]
  • Haplopappus graniticus Tiehm & L.M. Shultz
  • Tonestus graniticus (Tiehm & L.M.Shultz) G.L.Nesom & D.R.Morgan

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 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

  1. ^ "Toiyabea granitica (Tiehm & L.M.Shultz) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 March 2024.
  2. ^ "NatureServe Explorer". NatureServe Explorer Tonestus graniticus. NatureServe. 2022. Retrieved 22 May 2022.
  3. ^ NRCS. "Tonestus graniticus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 11 December 2015.
  4. ^ "Nevada Natural Heritage Program". Heritage.nv.gov. 2011-12-19. Retrieved 2014-02-13.
  5. ^ "Flora of North America v 20 p 184". Efloras.org. Retrieved 2014-02-13.
  6. ^ "Reinstatement of Tonestus (Asteraceae: Astereae)". Phytologia. 68 (3): 174–180. 2013-05-30. Retrieved 2014-02-13.
  7. ^ 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.
  8. ^ 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.