Description from Flora of China
Herbs diffuse. Stems 15--25 cm tall, slender, branched, shiny, glabrous; nodes densely white lanate. Leaves sessile or proximal leaves very shortly petiolate, narrowly lanceolate or linear-lanceolate, rarely lanceolate, 0.6--2 cm × 2--5 mm, dark, abaxially white lanate at midvein, adaxially glabrous, both surfaces with prominent midvein, base narrowed or rounded, apex acuminate or acute. Flowers in terminal cymes; bracts linear-lanceolate, smaller than leaves, herbaceous. Pedicel 0.7--1(--2.5) cm, slender, white lanate, hairs dense distally. Sepals 5, lanceolate, 2.5--3 mm, glabrous, veins very slender and inconspicuous, margin membranous, apex acute. Petals absent. Stamens 10, slightly shorter than petals; anthers suborbicular, small; filaments subulate. Ovary ovoid, ca. 1 mm; styles 3, subequaling ovary. Capsule narrowly ovoid, 3--4 mm. Seeds red-brown, globose, compressed, ca. 0.5 mm in diam., nearly smooth. Fl. Jun, fr. Jun.
* Wet valleys; ca. 3500 m. Yunnan.