Herbs, perennial, procumbent to erect, (5-)8-20(-30) cm tall. Stems 4-angled, sparsely to rather densely pilose, angles thickened. Leaves in whorls of 4, sessile; blade drying submembranous, blackish green, broadly elliptic to obovate, 4-20 × 3-10 mm, length/breadth index 2 or less, both surfaces sparsely to densely pilose at least along veins, base cuneate to obtuse, apex obtuse to rounded and mucronate; principal veins 3, palmate. Inflorescences with terminal and axillary, few-to many-flowered, 1-3 cm long cymes; peduncles sparsely pilose to glabrous and smooth; bracts spatulate to ovate, 1.5-3 mm; pedicels 1-4 mm. Flowers ?hermaphroditic. Ovary obovoid, ca. 0.5 mm, densely pubescent with uncinate trichomes. Corolla yellowish white, rotate, 1-2 mm in diam., glabrous; lobes 4, ovate, 0.4-0.8 mm, acute. Mericarps ovoid, ca. 1 mm, with dense white to yellowish uncinate trichomes 0.4-0.5 mm. Fl. Jun-Sep, fr. Jun-Nov.
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