Description from Flora of China
Herbs perennial, glabrous, dioecious. Stems blue-green when dry, erect, much branched, to 25 cm tall, succulent, with dense cystoliths when dry; internodes 1-2 cm. Leaves crowded on upper nodes; stipules almost persistent, triangular, ca. 1 mm, membranous; petiole strongly unequal in length, 0.5-2.5 cm; leaf blade adaxially brownish green, strongly unequal in size, large leaves often peltate, narrowly ovate, ovate- or elliptic-lanceolate, 5-7 × 1.7-2.1 cm, subpapery, cystoliths fusiform, often conspicuous adaxially, base emarginate or subrounded, margin serrate; apex long acuminate; small leaves often basifixed, ovate, 1.4-2.6 × 1-1.4 cm, base emarginate, apex acute. Male inflorescences solitary, a racemelike cyme, of several glomerules, 1.5-3.5 cm overall, peduncle 1-2 cm; female inflorescence unknown. Male flowers pink, subsessile, in bud obovoid, ca. 0.2 mm; perianth lobes 4, obovate-oblong, connate at base, subapically corniculate; stamens 4; rudimentary ovary oblong.
Shaded moist places in dense forests in limestone hills; ca. 1600 m. W Guangxi [N Vietnam].