Stems usually have swollen nodes; leaves alternate and usually subtended by a sheathing stipular growth (ochrea, oh-kree-ah); flowers with petal-like sepals and usually in a slender cluster or head; ovary compressed or three-angled.
Curly DockRumex crispus
Prostrate KnotweedPolygonum aviculare
Red SorrelRumex acetosella
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