Herbs perennial. Roots fusiform or conic. Stems clustered, 2--10 cm, glandular hairy in 2 lines or yellow or densely white glandular hairy. Leaves diffusely paired; petiole 2--5 mm; leaf blade lanceolate, elliptic, obovate, or saccate, 5--10 × 3--5 mm, granular, sparsely glandular pubescent or densely villous, midvein impressed, base cuneate, apex rounded or obtuse. Flower solitary or cymes few flowered; bracts similar to leaves but smaller. Pedicel 1--4 cm, sparsely glandular hairy. Sepals 5, greenish abaxially, ovate or lanceolate, 4--7 × 2--3 mm, sparsely glandular pubescent or densely villous, midvein impressed, base broadened, margin narrowly membranous, ciliate, apex acute. Petals 5, white, obcordate, ca. 2 × as long as sepals, base narrowly cuneate, apex rounded or bifid nearly to middle. Floral disc with 5 fleshy glands. Stamens 10, longer than sepals; anthers brown or green. Ovary ovoid, ca. 1.5 × 1.2 mm. Styles 4 or 5 (in female flowers), ca. 1.5 mm. Fl. Jul--Aug.
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