Pacific Island Ecosystems at Risk (PIER)

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Oenothera picensis
Phil., Onagraceae
No images for this taxon


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  yes

Habit:  herb

Description:  "Annual herb with an erect or somewhat decumbent main stem, not forming a rosette, simple or branched near the base, 2-10 dm tall. Plants very densely to sparsely long-villous, the hairs soft, densely to sparsely short-villous and glandular-pubescent.  Cauline leaves narrowly elliptic to lanceolate, acute, acute to truncate at the base, sessile, 3.5-10 cm long, 0.5-2 cm wide; bracts narrowly oblong or narrowly lanceolate to narrowly ovate, acute, truncate to subcordate at the base, sessile, 2.5-6 cm long, 0.5-2 cm wide, longer than the capsule they subtend or subequal to them, occasionally shorter; leaves plane or coarsely undulate at the margins, irregularly serrate, the teeth blunt. Inflorescence mostly branched, floral tube 1.5-4.5 cm long, buds oblong to lanceolate in outline, 0.7-1.7 cm long, 3-5 mm thick, often red striped at the junction of the sepals with the floral tube, sepals often flecked with dark red, apices of the sepals 1-2 mm long, mostly erect, petals broadly obovate to very broadly obovate, sometimes broadly elliptic, 0.7-2.5 cm long, anthers 5-12 mm long, filaments 5-15 mm long, style short, the anthers shedding pollen directly on the stigma at anthesis, 2-6 cm long, stigma lobes 3-6 mm long, ovary 1-2 cm long. Capsule (20-) 25-40 (-45) mm long, 3-4 mm thick. Seeds elliptic to broadly elliptic in outline, 1.2,-2 mm long, 0.5-0.8 mm thick, brown"  (Smithsonian Botany).

Habitat/ecology:  (no habitat/ecology info known by PIER)

Propagation:  Seed

Native range:  Argentina and Chile (GRIN).

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) (p. 555)
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. 555)
Chile (offshore islands)
Juan Fernández Islands
Morro Juanango introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 555)
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)
Antofagasta, Coquimbo, Santiago, Valparaiso


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

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This page was created on 12 FEB 2011 and was last updated on 9 APR 2011.