Plants stoloniferous, stolons often ending in a tuber. Leaves aerial at least when mature, sagittate, sheathing, apex acuminate to rounded, lateral lobes longer than middle lobe. Inflorescences racemose, in 3 to many whorls of 3 flowers, lower 1-3 whorls usually branched; bracts free or connate toward base. Flowers unisexual; female flowers on lower 1-8 whorls, with short pedicels; male flowers with pedicels 0.5-1.5 cm. Sepals reflexed, ovate, 3-5 × 2.5-3.5 mm. Petals obovate, ca. 2 × as large as sepals. Stamens numerous; anthers yellow. Achenes obliquely obovoid, 4.5-5.5 × 4-5 mm, winged, with an erect, apical beak. Fl. and fr. May-Nov. 2n = 22*.
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.