Toothwort is a perennial herb, a cress with prominent lilac, link or white
flowers, 1-1.5 cm across. Flowers are borne in dense clusters at the end
of branches, which elongate in fruit. Petals are 1-1.5 cm long, sepals
about 5 mm long with papery margins. Leaves are compound, with 3-10 pairs
of large lanceshaped, pointed, toothed leaflets 3-8 cm long. Leaflets are
variable in shape and teeth. Stems are erect, robust, 1-3 ft tall. Fruit
is 2.5-5 cm long. Toothwort is found in the Himalayas, from Pakistan to
China, at altitudes of 2100-3600 m. Flowering: May-August.