Vascular Plants - Oxalidaceae - Oxalis: Log in
Oxalis trilliifolia
Page Author: Don Knoke
threeleaf wood-sorrel, great wood-sorrel, trillium-leaf wood-sorrel 
Blooms: May - August
Habit: herb
Duration: perennial
Origin: Native
Distribution: West slope of the Cascades, Washington to northwest California.
Habitat: Meadows and moist woods in the coastal mountains and up to 6000 feet in the Cascades.
Species Description:

General: Acaulescent perennials with stout, scaly rhizomes.
Leaves: Petioles 5-20 cm. long, usually with soft, brownish hairs; leaves trifoliate, the leaf blades 5-8 cm. broad, obovate with a wedge-shaped base.
Flowers: Scapes 3- to 7-flowered; sepals 5, persistent; petals 5, about 1 cm. long, white or tinged with pink, shallowly notched; stamens 10, united basally, of 2 unequal lengths; styles 5, the stigmas capitate.
Fruit: Capsule linear, 2-3 cm. long, with a slender beak
Full Name with Authors:
Oxalis trilliifolia Hook.

Synonyms:
(none)

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

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

Washington Flora Checklist: Oxalis trilliifolia treatment.

Oregon Flora Project Atlas: Oxalis trilliifolia atlas page.

E-Flora BC: Oxalis trilliifolia atlas page.

CalPhotos: Oxalis trilliifolia images.

USDA Plants Database: Oxalis trilliifolia.

Image © 2007, G. D. Carr


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