A variable, native, erect perennial flowering plant.
Synonym: Curly Dock, Yellow Dock, Sour Dock, Narrow Dock
Botanical name: Rumex crispus L.
Medicinal name: Rumex crispus
Parts use: leaves
Species: R. crispus
Flowering: April - May.
Habitat: Fields, roadsides, railroads, waste ground, disturbed sites.
Colour: The mature plant is a reddish brown colour.
Stems: 2m tall, simple or branching at the apex, erect, from a big taproot, herbaceous, glabrous, ribbed, becoming red with age.
Leaves: Leaves lanceolate or oblong-lanceolate with cuneate or subcordate base, margins strongly undulate. The leaves of this plant from which the drug is poetized are found to contain bin oxalate of potash.
Drug action: mucus membrane of the larynx, trachea, bronchi and bronchioles.