Procumbent annual 2-15 cm; stems villous and glandular-hairy. Leaves 3-foliolate; leaflets 5-8 mm, oblanceolate to obovate-orbicular. Primary branches of the inflorescence up to 10 mm, muticous, 1-flowered. Corolla 5-10 mm, pink or purple, about equalling the calyx. Legume 8-14 mm. Seeds up to 20, 0.5-1 mm, acutely tuberculate.
An annual of thin, dry, calcareous soils with a low organic content, especially on S.- or S.W.-facing coastal cliffs of limestone and, in Scotland, greywacke. In the Channel Islands it occurs in consolidated dune turf. Populations often fluctuate in size, sometimes very markedly. Lowland.
This plant might be poisonous
How to get rid of: