Herbs perennial. Basal leaves pinnate, sometimes 3-foliolate. Ovary glabrous; style sub-basal, fusiform, thickened at middle, gradually tapering at both ends.

• 多年生草本羽状的基生叶，有时具3小叶。子房无毛花柱近基部，纺锤形，加厚在中部，逐渐渐狭在两末端。