Pacific Island Ecosystems at Risk (PIER)

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Oxalis micrantha
Bertero ex Savi, Oxalidaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: tufted yellow woodsorrel

Habit:  herb

Description:  "Small usually more or less tufted annual ordinarily only a few cm. tall, in varying degree hirsute and somewhat glandular, especially the nearly filiform divaricate pedicels (these to about a cm. long) of the laxly branched several to many-flowered cymes; petioles to 8 cm. long, about half as long as the peduncles, the broadly obcordate rather deeply emarginate leaflets sometimes 14 mm. long, 15 mm. wide, often smaller; bracts caducous, 1-2 mm. long; sepals often rubescent below and marginally, nearly linear, acute, 3-4 mm. long, sometimes equaled by the spathulate yellow petals; seeds 1-many in each cell"  (MacBride, 1949, 13(3/2):576).

Habitat/ecology:  In Peru (native), "open mixed formation, 2,200 meters"  (MacBride, 1949, 13(3/2):576).  "In Chile this species grows in the following environmental conditions:  Low altitude, interior valleys.  Somewhat dry areas where the drought may last 3-5 months, precipitations of 400-800 mm. are concentrated in winter.  Fully exposed to the sun, level areas or slopes facing north"  (Chileflora).

Propagation:  Seed

Native range:  Argentina, Chile, Peru  (MacBride, 1949, 13(3/2):576).

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
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) (pp. 461, 465, 556)
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) (pp. 461, 465, 556)
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) (pp. 461, 465, 556)
Voucher cited: Danton I(5/327)1674
Chile (offshore islands)
Juan Fernández Islands
Morro El Verdugo introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 556)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Chile (continental)
Chile
Chile (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Perú
Perú
Perú (Republic of) native
Macbride, J. Francis (1936) (p. 13(3/2):576)


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This page was created on 16 DEC 2010 and was last updated on 9 JAN 2011.