Rhizome long or short; leaf blade ternate or 3-sect, petiole narrow or basally sheathing; involucral bracts sessile; pistils and achenes with distinct or obscure style and small or capitate stigma.

• 根状茎长或短；叶片三出或3裂，叶柄狭窄或基部具鞘；总苞片无柄；雌蕊和瘦果具明显或不明显花柱和小的或头状柱头。(4