Rhizome dimorphic: short and thick (nodulose), and long and thin; sepals 5--12.
根状茎二形：
和厚(
小节)和
和
；
5--12.(16
Rhizome dimorphic: short and thick (nodulose), and long and thin; sepals 5--12.
根状茎二形：和厚(小节)和和；5--12.(16
Rhizome long and thin or shortly nodulose; leaf blade ternate, petiole narrow; involucral bracts petiolate; pistils and achenes with distinct style and small, usually linear stigma.
根状茎和的
的小节；三出的叶，狭窄的叶柄；总苞叶柄；雌蕊和瘦果明显花柱和小，通常线形柱头。(8
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