Rhizomes short. Stems arching and rooting apically, terete, sometimes apically narrowly angular. Leaves alternate; petiole short; leaf blade rhomboid-ovate, 4-15 X 1.5-7 cm, glabrous or hairy, base mostly broadly cuneate to rarely rounded, margin dentate, apex acute to acuminate. Inflorescences capitate, axillary, 1-1.5 cm; bracts lanceolate, as long as or shorter than corolla, ciliate. Calyx shorter than bracts; lobes subulate. Corolla straight; limb actinomorphic; lobes 1-2 mm. Stamens conspicuously exserted; filaments hairy; anthers 1.2-1.5 mm. Capsule ovoid, ca. 2.5 mm. Seeds black, globose. Fl. May-Sep.
Forests, grasslands at forest margins, thickets; at elevations from 400-900 metres. Pendulous on wet rocks along rivers; at elevations around 300 metres.
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