Broad-leaved dock (Rumex obtusifolius)

Broad-leaved dock (Rumex obtusifolius) is a species of plant in the Polygonaceae, herbaceous perennial, growing broadly, up to 150 cm tall, large, oval-shaped leaves with a heart-shaped base and rounded tip, large taproot with many branches extending to a depth of 150 cm.

R. obtusifolius has leaves up to 30 cm long, 15 cm wide and green. Stems are long, hard, alternate, green or reddish in color and unbranched until just below the inflorescence. A main vein in the middle and green or reddish in color. Flat or wavy surface.

The inflorescences consist of large clusters of racemes that contain small, greenish flowers that turn red as they mature. Seeds are reddish brown and dry.

Broad-leaved dock grows in fertile soils, grasslands, waste lands, roadsides, ditches, coastlines and riverbanks, forest margins, forest clearing and agricultural land. The leaves are used as a salad to make vegetable broth or cooked like spinach. Dried seeds are used as a spice.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Caryophyllales
Family: Polygonaceae
Subfamily: Polygonoideae
Tribe: Rumiceae
Genus: Rumex
Species: Rumex obtusifolius
Subspecies: Rumex obtusifolius ssp. obtusifolius, Rumex obtusifolius ssp. silvestris, Rumex obtusifolius ssp. transiens

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