A perennial herb, 1—2 m tall. Leaves: basal leaves ovate-lanceolate, base rounded to narrowed, margin slightly undulate or not. Inflorescence a panicle; flowers bisexual, inner perianth segments enlarged in fruit, orbicular, 6—10 mm long, base subcordate, often denticulate, only one valve with a well developed tubercle. Nutlet 3—4 mm long.
The juice, and an infusion of the root, has been used as a poultice and salve in the treatment of various skin problems. An infusion of the root has been used in the treatment of constipation. The leaves have been rubbed in the mouth to treat sore throats.
Contraindication
People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition.