Herbs, perennial, weak, procumbent to ascending, from filiform rhizome, 8-50 cm tall. Stems 4-angled, glabrous or with sparse spreading hairs. Middle stem leaves in whorls of 4, sessile or subsessile; blade drying papery, dark green, narrowly ovate or elliptic to oblong-lanceolate, (3-)5-18(-23) × (1.5-)3-7(-11) mm, sparsely and at margins antrorsely hairy, base attenuate, apex slightly acute; vein 1. Inflorescences terminal and axillary, slender and slightly divaricate, cymes 1.5-6 cm, rather few flowered; axes glabrous, nearly ebracteate; pedicels (2-)4-8(-12) mm. Ovary obovoid, ca. 1 mm, appressed hairy. Corolla yellowish, ± rotate, 1-1.3 mm in diam.; lobes 4, triangular, ± obtuse. Mericarps ovoid, 1-1.5 mm, densely with short uncinate trichomes ca. 0.1 mm. Fl. and fr. Jul-Oct.
Home