Gamochaeta coarctata, the gray everlasting (also known as cudweed, like other members of its genus),[2] is a species of flowering plant in the family Asteraceae. 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 | |
|---|---|
.jpg)
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Gamochaeta |
| Species: | G. coarctata
|
| Binomial name | |
| Gamochaeta coarctata (Willd.) Kerguélen 1987
| |
| Synonyms[1] | |
|
Synonymy
| |
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
edit- ^ The Plant List, Gnaphalium coarctatum Willd.
- ^ NRCS. "Gamochaeta coarctata". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 17 July 2015.
- ^ a b Guy L. Nesom 2004. New distribution records for Gamochaeta (Asteraceae: Gnaphalieae) in the United States. Sida 21(2): 1175–1185.
- ^ Biota of North America Program 2014 county distribution map
- ^ Calflora taxon report, University of California, Gamochaeta coarctata
- ^ Flora of North America, Gamochaeta stachydifolia (Lamarck) Cabrera, 1961.
- ^ Guy L. Nesom 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68:186–198.
External links
edit