Polygonum L. >
Stipules deeply cut, silvery to white Polygonum
Leaves oblong-lanceolate or elliptic, 1–4 cm long; lateral veins conspicuous underneath. Nut dull. Stems up to 1 m long
Perianth tube at least half as long as the segments. Perianth 3–4 mm long. Leaves 5–20 mm long, ± uniform in size. Widespread. Waste land. Introd. from Europe. Wire Weed Polygonum arenastrum