Rumex crispus L.
Erect, taprooted simple perennial.
Alternate, long and narrow with round to pointed tips and wavy margins. Leaves are shaped like bacon strips.
Forms a basal rosette that bolts prior to flowering, unbranched, reaching 3 to 4 feet in height. A membranous sheath (ocrea) surrounds the stem at the base of each petiole.
Flowers and fruit
Flowers are small, usually greenish and found in clusters on the upper stems, becoming reddish brown at maturity. The seed is enclosed in a single-seeded, shiny, reddish brown, three-sided fruit.
Seeds and fleshy taproot.
Broadleaf dock (R. obtusifolius L.) Differs by having much wider, broader leaves and usually heart-shaped leaf bases.
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