Prostrate to suberect perennial herb, stem 4-angled, ± glabrous, stem and branches very leafy. Leaves 6 in a whorl, minute, generally 5-8 x 1-3 mm, linear-lanceolate, aristate-acute-mucronate, glabrous, sessile, midrib conspicuous, margin often recurved. Inflorescence solitary axillary very rarely with 2 axillary flowers, peduncle very short, always shorter than flower, enlarged and straight in fruit. Corolla white, lobes ovate-lanceolate, acute, c. 1 mm long. Stamens shorter than corolla-lobes. Fruit glabrous-granulate, c. 2 mm in diameter.