Lam., Asteraceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Habit: herb
Description:
Genus: "Annuals [biennials or perennials], (1-) 3-30 cm; usually taprooted, sometimes fibrous-rooted. Stems usually 1, erect (often with decumbent-ascending branches from bases; ± woolly-tomentose, not glandular). Leaves mostly cauline; alternate; ± sessile; blades oblanceolate to spatulate or linear, bases ± cuneate, margins entire, faces concolor, gray and tomentose. Heads disciform, usually in ± capitate clusters (in axils of leaves or bracts), sometimes in spiciform glomerules. Involucres narrowly to broadly campanulate, 2.5-4 mm. Phyllaries in 3-5 series, usually white or tawny to brown (opaque or hyaline, often shiny; stereomes usually glandular distally), ± equal to unequal, chartaceous toward tips (inner phyllaries narrowly oblong, usually white-tipped and protruding distal to outer). Receptacles flat, smooth, epaleate. Peripheral (pistillate) florets 40-80 (more numerous than bisexual); corollas purplish or whitish. Inner (bisexual) florets 4-7; corollas purplish or whitish. Cypselae oblong, faces usually glabrous, sometimes minutely papillate (hairs ± papilliform, not myxogenic); pappi readily falling, of 8-12 distinct, barbellate bristles in 1 series" (Flora of North America online).
Species: "Tallo herbáceo, derecho, sencillo, tanto él como ambas caras de las hojas envueltos en una lana cenicienta. Hojas decurrentes, linear-lanceoladas, con la base aflechada, el ápice agudo i las márjenes encrespadas; ca. de 4 cm. de largo i de 6-7 mm. de ancho. cabezuelas paniculadas, con las flores centrales ☿ en el número de 10-12. hojuelas de invólucro poco agudas. Aquenios apenas papilosos. Pelos de vilano entretejidos en la base" (Reich, 1896; vol. 4, p. 53).
Habitat/ecology: (no habitat/ecology info known by PIER)
Propagation: Seed
Native range: Argentina, Bolivia, Brazil, Uruguay (GRIN). Chile (Reich, 1896; vol. 4, p. 53).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
|
Skottsberg, Carl (1953) (p. 224) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
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) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
|
Skottsberg, Carl (1953) (p. 224) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Santa Clara |
introduced
|
Skottsberg, Carl (1953) (p. 224) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Santa Clara |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Santa Clara |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
Chile (offshore islands)
Juan Fernández Islands |
Morro El Verdugo |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
Chile (offshore islands)
Juan Fernández Islands |
Morro Juanango |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554) |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
South America (Pacific rim)
South America (Pacific rim) |
Chile (Republic of) | Skottsberg, Carl (1953) (p. 224) |
Control: If you know of control methods for Gnaphalium cheiranthifolium, please let us know.