Herbaceous perennial, aromatic. Erect or ascending stems from 30 to 90 cm, ramified, glabrous. Leaves lanceolate, acute, limbs
dotted. Flowers in big terminal spikes, from 2.5 to 7.5 cm, the central one is surpassed by the lateral ones; glabrous calyx, sharply toothed, usually ciliate; purple corolla, rarely white, glabrous.

Biennial or perennial herb with a strong smell, sparsely branched, glabrous, 30 cm to 1 m high. Longitudinally striated stem. Alternate leaves, 3 to 25 cm long, petioles with a sheathing base, composed of a few leaflets with a deeply lobed or dentate margin; the upper leaves are smaller than the lower ones and are short petiolate or subsessile. Umbels composed of 6 to 16 small almost sessile umbels or on short peduncles, less than 1.5 cm long.