Vascular Plants - Oxalidaceae - Oxalis:
Oxalis suksdorfii
Suksdorf wood-sorrel, western yellow wood-sorrel 
Blooms: April - August
Habit: herb
Duration: perennial
Origin: Native

Conservation Status:
Sensitive
Distribution: West of the Casccades, southern Washington to northwest California.
Habitat: Low elevations, usually in moist, coastal woods but sometimes on rather dry, open slopes.
Species Description:

General: Finely pubescent perennial from rhizomes, the stems 3-15 cm. long, decumbent to erect.
Leaves: Leaves alternate, long-petiolate, trifoliate; leaflets 1.5-3 cm. broad, obcordate, drooping; stipules very small or lacking.
Flowers: Flowers 1-3, short-pedicellate, on peduncles exceeding the leaves; sepals 5; petals 5, yellow, 12-20 mm. long, rounded; stamens 10, the filaments hairy, the lower 2-3 mm. united, 5 filaments longer than the other 5; styles 5.
Fruit: Flowers 1-3, short-pedicellate, on peduncles exceeding the leaves; sepals 5; petals 5, yellow, 12-20 mm. long, rounded; stamens 10, the filaments hairy, the lower 2-3 mm. united, 5 filaments longer than the other 5; styles 5.
Full Name with Authors:
Oxalis suksdorfii Trel.

Synonyms:
Oxalis corniculata L. var. macrantha auct. non Trel.

Treated in Flora of the PNW as:
Oxalis suksdorfii
Additional Resources:

WTU Herbarium Specimens: View list of Oxalis suksdorfii specimens in the WTU Herbarium database.

Washington Flora Checklist: Oxalis suksdorfii treatment.

Oregon Flora Project Atlas: Oxalis suksdorfii atlas page.

E-Flora BC: Oxalis suksdorfii atlas page.

CalPhotos: Oxalis suksdorfii images.

USDA Plants Database: Oxalis suksdorfii.

Image © Washington Natural Heritage Program


All photographs of Oxalis suksdorfii:
(click on a thumbnail to view larger photo)
 
 
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Washington Native Plant Society
WA Native Plant Society