53. Pilea paniculigera C. J. Chen, Bull. Bot. Res., Harbin. 2(3): 92. 1982.
滇东南冷水花 dian dong nan leng shui hua
Herbs perennial, glabrous, monoecious or dioecious. Stems blue-green when dry, erect, much branched, to 100 cm tall, succulent; lower internodes 2-7 cm, upper internodes 1-4 cm. Stipules almost persistent, triangular, ca. 1 mm, membranous; petiole subequal in length, 1.8-6 cm; leaf blade abaxially green, adaxially dark green, narrowly ovate, ovate-lanceolate, or oblong-lanceolate, peltate, subequal in size, 4.5 -11 × 2-5 cm, submembranous, 3-veined, lateral veins 3 or 4 on each side, external secondary veins 5-7, finely honeycombed abaxially, cystoliths fusiform, often conspicuous abaxially and along margin on both surfaces, base often truncate, rarely rounded, margin coarsely dentate, apex long acuminate or caudate-acuminate. Inflorescences solitary; male inflorescence a cymose panicle, 3-11 cm overall, peduncle 1-6 cm; female inflorescence a racemelike cyme, distal, often shorter than petioles. Male flowers greenish, subsessile, in bud obovoid, ca. 1.2 mm; perianth lobes 4, connate at base, apex acute, without corniculate tip by apex; stamens 4; rudimentary ovary conic. Female perianth lobes unequal, longest one corniculate at apex. Achene brownish, obliquely ovoid, ca. 0.8 mm, compressed, enclosed by persistent perianth. Fl. Nov-Feb, fr. Mar-May.
Shaded moist places in mixed forests, on rocks; 1200-1600 m. SE Yunnan [N Vietnam].