Herbs perennial. Stems erect, 50-120 cm tall, distinctly striate, branched from above middle, pubescent but glabrous basally. Petiole 1-1.5 cm, pubescent; leaf blade abaxially greenish, adaxially green, elliptic or elliptic-lanceolate, 7-12 × 2-5 cm, papery, both surfaces sparsely pubescent, constricted below, base truncate or cuneate, margin entire, densely shortly ciliate, apex long acuminate; ocrea brown, 1-2 cm, membranous, pilose along veins, lacerate, apex oblique. Inflorescence terminal or axillary, paniculate, to 10 cm; rachis and branches pilose; bracts ovate, small, 1-1.5 mm, each 1-flowered. Pedicel 3-4 mm, slender, pubescent, apex articulate. Perianth white or pinkish, 5-parted; tepals caducous, obovate, 3-4 mm, unequal. Stamens 8, included. Styles 3, filiform, 1.5-2 mm; stigmas capitate. Achenes equaling persistent perianth, dark brown, slightly shiny, broadly ovoid, trigonous, 3-4 mm. Fl. May-Jul, fr. Jul-Sep.
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