Polygonum divaricatum L.

Herbs perennial. Stems erect, 70-120 cm tall, glabrous, branched from base; branches spreading, divaricate. Petiole ca. 5 mm; leaf blade lanceolate or oblong, 5-12 × 0.5-2 cm, both surfaces glabrous or pilose, base cuneate or narrowly cuneate, margin entire, shortly ciliate, apex acute; ocrea tubular, 1-2 cm, membranous, pilose or glabrous, oblique, dehiscent. Inflorescence paniculate; branches spreading; bracts ovate, veined, each 2-or 3-flowered. Pedicels equaling bracts, 2.5-3 mm, apex articulate. Perianth white, 5-parted; tepals elliptic, 2.5-3 mm, unequal. Stamens 7 or 8, included. Styles 3, very short; stigmas capitate. Achenes distinctly exceeding persistent perianth, yellow-brown, shiny, broadly ellipsoid, trigonous, 5-6 mm. Fl. Jul-Aug. fr. Aug-Sep.

It is a temperate plant. It grows in Inner Mongolia in China.

The seeds are used as a grain. The young stems are used as a sweet.