Herbs perennial, villous and glandular hairy. Roots conic or spinose. Stems usually dichotomously branched, 4-angled, 10--20 cm, soft; internodes 1--2.5 cm. Petiole short or absent; leaf blade ovate or ovate-orbicular, 0.8--1.7 cm × 4--8 mm, both surfaces hairy, densely so on midvein and margin abaxially, base rounded. Cymes monochasial, few flowered, or flower solitary; bracts leaflike, smaller than leaves. Pedicel recurved, 1--2 cm, hairy. Sepals 5, orbicular-lanceolate or orbicular-ovate, 5--6 × ca. 2 mm, herbaceous, hairy abaxially, midvein broadened at base, margin narrowly membranous, apex acute. Petals 5, white, broadly obovate, ca. 1.5 × as long as sepals, 5--6 mm wide, apex dentate lobed or lacerate. Floral disc with 5 glands; glands 2-cleft. Stamens 10; anthers yellow-brown. Ovary ovoid. Styles 2 or 3, ca. 3 mm. Fl. Jun--Jul.
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