Vascular Plants - Oxalidaceae - Oxalis: Log in
Oxalis stricta
yellow wood-sorrel, common yellow oxalis 
Blooms: April - September
Habit: herb
Duration: perennial
Origin: Introduced
Distribution: Weedy native, found throughout North America.
Habitat: Disturbed ground, lawns and gardens.
Species Description:

General: Perennial from widespread, slender, fleshy rhizomes, the stems to 5 dm. tall, erect to prostrate, pubescent to glabrous.
Leaves: Leaves alternate, long-petiolate, trifoliate; leaflets 1-5 cm. long, obcordate, drooping, usually glabrous; stipules lacking.
Flowers: Flowers 2-7, long pedicellate, on axillary peduncles that exceed the leaves; sepals 5; petals 5, yellow, 4-9 mm. long; stamens 10, united at the base, 5 filaments longer than the other 5; styles 5.
Fruit: Capsule 5-celled, sparsely hairy.
Full Name with Authors:
Oxalis stricta L.

Synonyms:
(none)

Treated in Flora of the PNW as:
?
Additional Resources:

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

Washington Flora Checklist: Oxalis stricta treatment.

Oregon Flora Project Atlas: Oxalis stricta atlas page.

E-Flora BC: Oxalis stricta atlas page.

CalPhotos: Oxalis stricta images.

USDA Plants Database: Oxalis stricta.

Image © 2005, Ben Legler


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