Stems prostrate to procumbent or ascending, up to 30 cm. long but often considerably less, sometimes much branched and forming tufts or mats, rooting at the lower nodes, slender, quadrangular.
Leaves ± sessile; lamina 3–9 × 2–5·5 mm., rounded at the apex, broadly cuneate to rounded or subamplexicaul at the base, with plane margin and minute inconspicuous translucent glandular dots.
Petals 2–5 (7) mm. long, 1–2 times as long as the sepals, apricot-yellow becoming orange-yellow or orange, occasionally marked with red, eglandular.
Sepals subequal or unequal, oblong to deltoid or lanceolate, obtuse or acute, with translucent glandular longitudinal lines and submarginal dots.
Flowers solitary, terminal, or in few-flowered monochasial cymes and then appearing axillary.
Stamens 15–27, irregularly arranged or in three indistinct groups.
Ovary 1-locular; styles (2) 3 (4), 0·7–1·5 mm. long, free.
Fruit capsular, (2) 3 (4)-valved.
Perennial herb.