Upright perennial with white, pink or purple flowers in spring or early summer. The slow grower eventually reaches 3 feet high with equal spread.

Abortifacient, anthelmintic, antispasmodic, aromatic, digestive, diuretic, emmenagogue, expectorant, febrifuge, galactogogue, stimulant and tonic (flowering stem, root bark)

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In nervous complaints and intermittent fevers, in scrofulous and scorbutic diseases (root); it strongly stimulates the muscles of the uterus, inducing menstruation and sometimes causing abortion (plant); for female complaints and constipation (leaves).

The plant produces an oil that burns some people's skin.