Herbs, perennial, weak, procumbent or suberect, 10-60 cm tall. Rhizome and roots red, filiform. Stems numerous, 4-angled, with retrorse and/or spreading hairs to glabrescent. Leaves and leaflike stipules in whorls of 4; blade drying papery or membranous, linear-elliptic to narrowly lanceolate, (3-)8-17(-25) × (0.5-)1-2.5(-3.5) mm, both surfaces hirsute or only midrib and margins with straight or slightly curved hairs, base gradually and shortly attenuate, apex obtuse to subacute or shortly acuminate; vein 1. Inflorescences terminal and axillary, with several-to many-flowered cymes on peduncles longer than leaves; pedicels 1-6 mm. Flowers evidently sexually differentiated (dioecious or polygamo-dioecious?). Ovary obovoid, ca. 0.5 mm, hairy. Corolla light greenish, marked with reddish, rotate, 2-2.5 mm in diam.; lobes 4, ovate, cuspidate, sparsely hirsute toward apex. Mericarps ellipsoid, 1-1.5 mm, with dense uncinate trichomes 0.5-0.7 mm. Fl. Jul-Aug, fr. Sep-Oct.
Home