Gamochaeta | |
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Gamochaeta calviceps | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Subfamily: | Asteroideae |
Tribe: | Gnaphalieae |
Genus: | Gamochaeta Wedd. |
Type species | |
Gamochaeta americana [1] [2] | |
Synonyms [3] | |
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Gamochaeta is a genus of flowering plants in the family Asteraceae. [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]
Nothoscordum is a genus of New World plants in the onion tribe within the Amaryllis family. It is probably paraphyletic. The genus is native to North, Central and South America, though a few species have become naturalized in various parts of the Old World.
Grindelia (gumweed) is a genus of plants native to the Americas belonging to the family Asteraceae. The genus was named for Latvian botanist David Hieronymus Grindel, 1776–1836.
Oxypetalum is a genus of flowering plants in the family Apocynaceae, first described with this name in 1810. The genus is native to South America.
Ophryosporus is a genus of South American flowering plants in the tribe Eupatorieae within the family Asteraceae.
Austroeupatorium is a genus of plants native primarily to South America, including herbaceous perennials and shrubs. The native range is focused on eastern South America and extends as far north as Panama and Trinidad and as far west as Bolivia.
Piptochaetium, or speargrass, is a genus of plants in the grass family, native to North and South America. Piptochaetium is a bunchgrass genus in the tribe Stipeae.
Hysterionica is a genus of flowering plants in the family Asteraceae.
Campovassouria is a genus of flowering plants in the family Asteraceae.
Urolepis is a genus of South American plants in the tribe Eupatorieae within the family Asteraceae.
Facelis (trampweed) is a genus of South American flowering plants in the family Asteraceae.
Tessaria is a genus of South American plants in the tribe Inuleae within the family Asteraceae.
Trichocline is a genus of Australian and South American plants in the tribe Mutisieae within the family Asteraceae. It consists of one species from Australia (T. spathulata) and twenty-three from South America.
Doniophyton is a genus of South American flowering plants in the daisy family.
Holocheilus is a genus of flowering plants in the family Asteraceae.
Picrosia is a genus of South American plants in the tribe Cichorieae within the family Asteraceae.
Aphyllocladus is a genus of flowering plants in the family Asteraceae.
Pamphalea is a genus of flowering plants in the family Asteraceae. The genus was first described by Lagasca in 1811, who spelled it Panphalea. de Candolle emended the spelling to Pamphalea in 1812, and that spelling has been generally accepted.
Micropsis is a genus of South American flowering plants in the family Asteraceae.
Gamochaeta stachydifolia is a species of flowering plant in the family Asteraceae. It is native to South America and naturalized in parts of California.
Gamochaeta pensylvanica, the Pennsylvania cudweed or Pennsylvania everlasting, is a widespread species of flowering plant in the family Asteraceae. It is native to South America and introduced into Eurasia, Africa, Australia, and North America. The pensylvanica epithet is a misnomer, as the plant is not native to Pennsylvania and only marginally naturalized there.