General:
Perennial herb from a slender taproot; stems decumbent to ascending, simple, many, rough hairy, trailing ones freely rooting, herbage brownish to reddish-purple, 5-10 cm tall/long.

Leaves:
Basal leaves few, reduced; stem leaves alternate, long stalked, clover-like, the blades 1-4 cm long, the leaflets broadly heart-shaped, folded towards each other; stipules linear to oblanceolate, often brownish, 1.5-4 mm long.

Flowers:
Inflorescence 2- to 5-flowered on stalks 2-10 cm long; petals yellow, 4-8 mm long, entire; sepals 2-4.5 mm long.

Fruits:
Capsules, oblong, 1.5-2.5 cm long, greyish rough-hairy; seeds brown, cross-wrinkled.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Acetosella corniculata (L.) Kuntze
Oxalis corniculata var. atropurpurea Planch.
Oxalis corniculata var. langloisii (Small) Wieg.
Oxalis corniculata var. lupulina (R. Knuth) Zucc.
Oxalis corniculata var. macrophylla Arsene ex R. Knuth
Oxalis corniculata var. minor Laing
Oxalis corniculata var. reptans Laing
Oxalis corniculata var. villosa (Bieb.) Hohen.
Oxalis corniculata var. viscidula Wieg.
Oxalis langloisii (Small) Fedde
Oxalis pusilla Salisb.
Oxalis repens
Oxalis villosa Bieb.
Xanthoxalis corniculata (L.) Small
Xanthoxalis corniculata var. atropurpurea (Planch.) Moldenke
Xanthoxalis langloisii Small
Xanthoxalis repens (Thunb.) Moldenke