Rumex is a genus of weedy herbs. Stipules sheathing stem at base of leaves, membranous, often fringed.
Leaves alternate, simple, entire.
Flowers green to reddish, small, petals and sepals 3 each, alike (tepals); stamens 6; ovary 3-parted, stigmas 3, styles 3 branched; inflorescences compound, of small, gathered clusters.
Fruit a 3-parted achene enclosed in the inner tepals (valves).