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Plant Form: Thicket-forming perennial herb.
Size: Up to 3 m tall.
Stem: Robust, hollow, with conspicuously ring-like nodes, often reddish, dying back for winter. Often slightly zig-zagging.
Leaves: Alternate, undivided, often more or less in one plane along the branch, broadly egg- to heart-shaped with drawn-out tip, up to 15 cm long, hairless.
Flowers: Tiny, greenish to off-white, numerous, in long, thin groups at the leaf joins.
Fruit and Seeds: Nutlets 2-4 mm long, dark brown to black, dispersed with three wings.
Habitat: Gardens, streams, rivers, ditches.
Distinguishing Features: Generally has smaller leaves and flower petals than other species in the genus Fallopia.