Inflorescence ± globose; peduncle longer than the leaves, pilose; bracts up to 0.5 mm long or absent.
Calyx glabrous or thinly silky; tube 11-nerved; teeth equal to the tube.
Stems prostrate, pilose, often rooting at the nodes.
Flowers with pedicels pilose, reflexed in fruit.
Seeds light brown, irregularly discoid.
Perennial herb from a strong rootstock.
Corolla white, pink or purplish-red.
Ovary stipitate; ovules 3–6.
Pod oblong, 2–6-seeded.
Stamens c. 5 mm long.