Tonestus graniticus

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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 graniticusTiehm & 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]

Esmeralda County, Nevada County in the United States

Esmeralda County is a county in the west of U.S. state of Nevada. As of the 2010 census, the population was 783, making it the least populous county in Nevada. Esmeralda County does not have any incorporated communities. Its county seat is the town of Goldfield.

Nevada State of the United States of America

Nevada is a state in the Western United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast and Utah to the east. Nevada is the 7th most extensive, the 32nd most populous, but the 9th least densely populated of the U.S. states. Nearly three-quarters of Nevada's people live in Clark County, which contains the Las Vegas–Paradise metropolitan area where three of the state's four largest incorporated cities are located. Nevada's capital, however, is Carson City.

Tonopah, Nevada Unincorporated town in Nevada, United States

Tonopah is an unincorporated town in and the county seat of Nye County, Nevada, United States. It is located at the junction of U.S. Routes 6 and 95, approximately midway between Las Vegas and Reno. In the 2010 census, the population was 2,478. The census-designated place (CDP) of Tonopah has a total area of 16.2 square miles (42 km2), all land.

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]

Corymb

Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are born on longer pedicels than the inner, bringing all flowers up to a common level. A cyme has a flattish top superficially resembling an umbel, and may have a branching structure similar to a panicle. Flowers in a corymb structure can either be parallel, or alternate, and form in either a convex, or flat form.

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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.