Pacific Island Ecosystems at Risk (PIER)

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Soliva anthemifolia
(Juss.) Sweet, Asteraceae
No images for this taxon


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: button Onehunga weed, dwarf jojo

Habit:  herb

Description:  "Prostrate annual, forming patches up to ca 20 cm diameter.  Stems sparsely to moderately clothed in long hairs.  Basal and lower cauline leaves petiolate, sheathing at base, moderately hairy, 2-3-pinnatisect, up to ca 12 x 3 cm; primary divisions in 4-8 pairs; ultimate segments narrow-elliptic to subulate, all in one plane.  Cauline leaves similar to basal, but usually smaller.  Involucral bracts in 1-2 rows, hairy, obtuse to apiculate, 3-5 mm long.  Capitula inconspicuous at flowering, clustered near base of plant and separated by short obscured internodes, 5-12 mm diameter at fruiting, with 30-numerous mature achenes.  Achenes 3-4.5 x 1-1.5 mm (including spine), sometimes with short hairs on both surfaces but not on wings, with long erect hairs at apex giving a woolly appearance to the fruiting capitulum; lateral angles entire, with narrow thick wings horizontally ridged in lower 2/3, rounded or squared to apex; spine 1-2 mm long"  (Webb et al., 1988; pp. 172-173).

Habitat/ecology:  In New Zealand, "mostly waste places, also pastures" (Webb et al., 1988; pp. 172-173).

Propagation:  Seed

Native range:  Argentina, Brazil, Paraguay, Uruguay (Webb et al., 1988; pp. 172-173).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Ecuador (Galápagos Islands)
San Cristóbal Group
San Cristóbal Island native
Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands)
Santiago Group
Santiago Island native
Charles Darwin Research Station (2005)
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands introduced
Kato, Hidetoshi (2007)
New Caledonia
New Caledonia
New Caledonia Islands   Swarbrick, John T. (1997) (p. 97)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
Tassin, Jacques (2005)
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)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 344)
China
China
Hong Kong introduced
invasive
Wu, Te-lin (2001) (p. 287)
In wasteland.
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 172)
"Mostly waste places, also pastures".
Taiwan
Taiwan Island
Taiwan Island   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 344)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 344)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 22 OCT 2002 and was last updated on 25 OCT 2006.