Herbs, annual to perennial, slender, diffusely branched. Fleshy lateral roots often produced (not in Corydalis gracillima). Leaves thin, bi-(tri-)ternate. Crest of upper petal tapering at both ends, not reaching apex. Fruit explosively dehiscent. Seeds smooth.
Eleven species: throughout the Himalayas plus Khasia hills (India) and Chin hills (Myanmar); six species in China.