(Mill.) Wedd., Asteraceae
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(Mill.) Wedd., Asteraceae |
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Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Other Latin names: Gnaphalium americanum Mill.
Common name(s): [more details]
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English: American everlasting, cudweed |
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Spanish: lechuguilla, palomita |
Habit: herb
Description: "Slender herb 10-35 cm high. Basal leaves in a rosette, spathulate or obovate, 5-12 cm long, 8-20 mm wide, upper surface green and glabrescent, lower surface white-tomentose; cauline leaves similar but smaller and narrower. Heads 1.5-3 mm in diameter, in axillary clusters forming dense spikes, surrounded by several leafy, white-tomentose bracts; involucral bracts oblong, broad-acute, shining, straw-coloured, scarious, hyaline at the tip. Achenes 0.5 mm long, oblong-elliptic to obovate, microscopically papillate, straw-coloured to orange-brown. Pappus bristles cohering at the base, c. 2 mm long, minutely barbellate" (NSW PlantNET).
Habitat/ecology: In New South Wales, Australia, "grows in disturbed areas" (NSW PlantNET).
Propagation: Seed
Native range: Mexico, Central and South America (GRIN).
Presence:
| Pacific | |||
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Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
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Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
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Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
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Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
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Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
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State of Hawaii
Hawaiian Islands |
Maui Island |
introduced
invasive |
Alford, Mac H. (2012) (pp. 2-3)
Voucher cited: Medeiros 462 (BISH) |
| Pacific Rim | |||
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Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
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Australia
Australia (continental) |
Australia (continental) |
introduced
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Australia
Australia (continental) |
New South Wales |
introduced
invasive |
National Herbarium of New South Wales (2011) |
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Chile (continental)
Chile |
Chile (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Colombia
Colombia |
Colombia (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Costa Rica
Costa Rica |
Costa Rica (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Ecuador (Mainland)
Ecuador |
Ecuador (Republic of) (continental) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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El Salvador
El Salvador |
El Salvador (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Guatemala
Guatemala |
Guatemala (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Honduras
Honduras |
Honduras (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Mexico
Mexico |
Mexico (United Mexican States) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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New Zealand
New Zealand |
New Zealand (country) |
introduced
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Nicaragua
Nicaragua |
Nicaragua (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Panama
Panama |
Panama (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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Perú
Perú |
Perú (Republic of) |
native
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U.S. Dept. Agr., Agr. Res. Serv. (2011) |
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United States (west coast)
United States (west coast states) |
USA (California) |
native
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U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011) |
| Also reported from | |||
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Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
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United States (continental except west coast)
United States (other states) |
United States (other states) |
native
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U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011) |
Additional information:
Additional online information about Gamochaeta americana is available from the Hawaiian Ecosystems at Risk project (HEAR).
Information about Gamochaeta americana as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).
Taxonomic information about Gamochaeta americana may be available from the Germplasm Resources Information Network (GRIN).
References:
Alford, Mac H. 2012. New records of Gamochaeta (Asteraceae) in the Hawaiian Archipelago. In: Evenhuis, Neal L. and Eldredge, Lucius G., eds. Records of the Hawaii Biological Survey for 2011. Part II: Plants. Bishop Museum Occasional Papers. 113:1-6.
Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.
National Herbarium of New South Wales. 2011. PlantNet: New South Wales Flora online. The Plant Information Network System of the Botanic Gardens Trust Version 2.0. Online resource.
U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.
U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.