Pink-sorrel - Oxalis articulata

A short, tufted, hairy plant with swollen rhizomes. Leaves three lobed in terminal rosettes, leaflets heart shaped, with orange or brownish dots (tubercles). Flowers pink, petals 12 to 20 mm in a broad umbel like cluster.

There are several other pink flowered Oxalis that have escaped from gardens; they are either paler pink and with leafy stems, or have underground bulbs. 

Usually deep pink flowers; leaves arise from rhizome at soil level.

Photograph of whole plant

Bare and disturbed ground, often close to habitation.

Flowers May to October.

Perennial.

Fairly widespread casual in Britain south of the Humber, particularly in the south west and around the coasts. Elsewhere in Britain it occurs from time to time as a garden escape.

Infrequent as an escape from cultivation in Leicestershire and Rutland.