Labill., Asteraceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Common name(s): [more details]
English: cotton fireweed |
Habit: herb
Description: "Perennial herb up to ca 60 cm tall. Leaves sessile, linear or linear-ovate, apex acuminate, base attenuate and sometimes auriculate, margin usually revolute, entire or denticulate, occasionally coarsely toothed, 3-13 cm x 0.2-0.5 (-3) cm, with soft matted hairs at least below, sometimes glabrous or scabrous above. Heads in cymose corymbs; involucres more or less cylindrical, ca 3 mm broad in flower, involucral bracts 11-13, 6-8 mm long; ray florets absent. Achenes ca 3 mm long, ridges hairy; pappus 5-6 mm long" (Stanley and Ross, 1986; vol. 2, p. 576).
Habitat/ecology: "Grows in disturbed situations, especially after fire" (New South Wales Flora Online). In New Zealand, "waste places, riverbeds and other stony places, cliffs and rock outcrops, also occasional in shrubland and grassland, sea level to 1000 m" (Webb et al., 1988; p. 284).
Propagation: Seed
Native range: Australia (GRIN).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
New Caledonia
New Caledonia |
New Caledonia Islands | Swarbrick, John T. (1997) (p. 96) |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Australia
Australia (continental) |
Australia (continental) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
New Zealand
New Zealand |
New Zealand (country) |
introduced
invasive |
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 284) |
Control: If you know of control methods for Senecio quadridentatus, please let us know.