UW Burke Herbarium species comparison

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Oxalis articulata

Oxalis corniculata

creeping yellow wood-sorrel
Habit Herbaceous perennial without rhizomes, but the stems trailing and freely rooting, glabrous or with appressed, aligned hairs; erect portions of the stems up to 1 dm. tall, the herbage usually brownish-red.
Leaves

Leaves alternate, trifoliate, long-petiolate, the leaflets obcordate, 1-4 cm. long, drooping;

stipules brownish, from fairly broad and 2-4 mm. long to linear and under 1.5 mm. long.
Flowers

Flowers 2-5 on long, axillary peduncles;

sepals 5, persistent;

petals 5, yellow, 4-8 mm. long, entire;

stamens 10, of 2 unequal lengths, the filaments glabrous;

pistil 5-celled;

styles 5, slender, distinct.
Fruits

Capsule oblong, 1.5-2.5 cm. long, grayish-hairy.

Oxalis articulata

Oxalis corniculata
Flowering time May-October
Habitat A weed of gardens, disturbed areas, and waste places.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring chiefly west of the Cascades crest and along the Columbia River in Washington; British Columbia to California, east across most of North America to the Atlantic Coast;
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Europe
Conservation status Not of concern
Sibling taxa
O. corniculata, O. dillenii, O. exilis, O. oregana, O. stricta, O. suksdorfii, O. trilliifolia
O. dillenii, O. exilis, O. oregana, O. stricta, O. suksdorfii, O. trilliifolia
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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