Procumbent Yellow-sorrel - Oxalis corniculata

Low to short rather hairy plant with creeping stems rooting at the nodes. Bronze-coloured leaves alternate, long stalked; leaflets heart shaped. Flowers yellow with petals 4 to 7 mm, in small 1 to 7 flowered umbels.

Oxalis exilis

Often purplish bronze leaves.  Larger plant, inflorescences several-flowered; 10 stamens, usually all with anthers

Close up of flowers showing stamens

Dry, open places, often around habitation.

Perennial.

Probably naturalised from garden escapes. It is an annual or short lived perennial, the main means of spread is by seed, ejected from its ripe seed pods.

Fairly frequent in most of England and Wales, rather rare and localised in Scotland.

Fairly frequent and possibly increasing in built up areas in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 34 of the 617 tetrads.