Gamochaeta coarctata

Gamochaeta coarctata
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Gnaphalieae
Genus: Gamochaeta
Species: G. coarctata
Binomial name
Gamochaeta coarctata
(Willd.) Kerguélen 1987
Synonyms[1]

Gamochaeta coarctata, gray everlasting,[2] is a species of flowering plant in the sunflower family. It is widespread in South America (from Colombia to Uruguay) and naturalized in parts of Eurasia, Australia, and North America.[3][4][5]

Gamochaeta coarctata is an annual herb up to 15 cm (5.9 in) tall. Leaves are up to 3 cm (1.2 in) long. The plant forms many small flower heads in elongated arrays. Each head contains 2–4 yellow disc flowers but no ray flowers.[6]

Some specimens collected in the United States were formerly misidentified as G. americana, which does not grow in the United States.[3][7]

References

  1. The Plant List, Gnaphalium coarctatum Willd.
  2. "Gamochaeta coarctata". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 17 July 2015.
  3. 1 2 Guy L. Nesom 2004. New distribution records for Gamochaeta (Asteraceae: Gnaphalieae) in the United States. Sida 21(2): 1175–1185.
  4. Biota of North America Program 2014 county distribution map
  5. Calflora taxon report, University of California, Gamochaeta coarctata
  6. Flora of North America, Gamochaeta stachydifolia (Lamarck) Cabrera, 1961.
  7. Guy L. Nesom 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68:186–198.


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