Gamochaeta
| Gamochaeta | |
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| Gamochaeta calviceps | |
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| Genus: | Gamochaeta |
| Type species | |
| Gamochaeta americana[2][3] | |
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Gamochaeta is a genus of flowering plants in the aster family.[4] There has not always been agreement among botanists regarding its status as a recognized genus, but it has become more accepted in recent years.[5][6] It currently includes many plants that previously belonged in genus Gnaphalium. Like many species of Gnaphalium, many Gamochaeta are called cudweeds or everlastings.
Gamochaeta are native to North and South America, with one species endemic to Tristan da Cunha in the South Atlantic.[6][7] Some species are found in other regions as introduced species outside of their native ranges, and sometimes as invasive noxious weeds.[6][8]
Plants of this genus have "relatively small heads in spiciform (spike-like) arrays, concave post-fruiting receptacles, truncate collecting appendages of style branches in bisexual florets, relatively small cypselae (fruits) with minute, mucilage-producing papilliform hairs on the faces, and pappus bristles basally connate (joined) in smooth rings and released as single units."[6]
References
- ^ a b c Flann, C (ed) 2009+ Global Compositae Checklist
- ^ lectotype designated by Cabrera, A. L. 1961. Observaciones sobre las Inuleae-Gnaphalineae (Compositae) de América del Sur. Boletín de la Sociedad Argentina de Botánica 9: 362.
- ^ Tropicos, Gamochaeta Wedd.
- ^ Weddell, Hugh Algernon. 1855. Chloris andina :essai d'une flore de la région alpine des Cordillères de l'Amérique du Sud 1(4–6): 151-154 short descriptions in Latin, longer descriptions and commentary in French
- ^ Nesom, G. L. 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68: 186–198.
- ^ a b c d e Gamochaeta. Flora of North America.
- ^ Evenhuis, N. L. and L. G. Eldredge, Eds. (2012). Records of the Hawaii Biological Survey for 2011. Part II: Plants. Bishop Museum Occasional Papers No. 113.
- ^ Flora of China Vol. 20-21 Page 776 合冠鼠麴草属 he guan shu qu cao shu GamochaetaWeddell, Chlor. Andina. 1: 151. 1856.
- ^ Gamochaeta. The Plant List.
- ^ Gamochaeta. Germplasm Resources Information Network.
- ^ Gamochaeta. Integrated Taxonomic Information System (ITIS).
- ^ Biota of North America Program 2013 county distribution maps
- ^ Freire, S. E. and E. Urtubey. (2013). Gamochaeta beckii (Gnaphalieae, Asteraceae): A new species from Bolivia. Systematic Botany 38(1):259-265.