Radical leaves palmately 5-foliolate, rarely 3-foliolate with leaflets pinnately parted, cauline leaves 3 to many; inflorescence corymbose, many flowered.

• 胚根叶掌状具5小叶，很少深裂的具3小叶具小叶成羽状，很多；花序伞房状，多花的。(26