Rumex L.
Leaf bases cordate, cuneate or rounded. Inner perianth segments leathery, often toothed, not inflated Rumex
Inner perianth segments entire, tuberculate
Perianth valves oblong, obtuse, 2–3 mm long, each usually with a large oblong tubercle. Flower clusters rather distant, leafy at the summit, in a loose panicle with stiff spreading and ascending branches. Lower leaves oblong-lanceolate, crisped. Widespread. Weed of cultivation, waste places and pastures. Introd. from Europe and Asia. Clustered Dock Rumex conglomeratus
Perianth valves broad-ovate, 3–6 mm long, cordate, reticulate, often only 1 of the 3 bearing a well developed tubercle. Flower clusters many-flowered, close together, leafy only near the base of the stems, in a long dense panicle with erect branches. Lower leaves oblong, with crisped edges. Widespread. Weed of cultivation, waste places and pastures. Introd. from Europe and Asia. Curled Dock Rumex crispus