Herb up to 80 cm. tall, rhizomatous; stems erect, unbranched, 3–5 mm. thick, puberulous.. Leaves in spirals, tending to distichous; lamina chartaceous when dry, elliptic to obovate, (3.5–)7–17 × 3.5–8.5 cm., apex acute to acuminate, base cuneate to subobtuse, margin coarsely dentate; upper surface glabrous, lower surface sparsely puberulous; lateral veins 6–8 pairs; petiole 1–2.6 cm. long, 1–2.5 mm. thick; stipules subulate, 2.5–5.5 mm. long, subpersistent.. Inflorescences (1–)2(–3) together; peduncle 0.5–1 cm. long, ± 1 mm. thick, recurved.. Receptacle funnel-shaped, laterally compressed, 0.6–1 cm. long; flowering face narrowly elliptic, 0.5–0.8 × 0.2 cm., margin ± 0.5 mm. wide; appendages in 1 row, primary ones 2, terminal, obovate, 1–5 mm. long, 1 mm. wide, concave, secondary ones 10–16, lateral, obovate to ovate or subtriangular, 0.3–1 mm. long, concave.. Staminate flowers ± spaced; perianth-lobes 3; stamens 3.. Pistillate flowers up to ± 10; perianth conical; stigmas 2, linear.
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