两次的花柱2半裂，每分枝具一匙形的或头状柱头。
Style twice 2 - cleft, each branch with a spatulate or capitate stigma.
圆锥花序稀松的分枝，通常大，具数枚到多数总状花序或小的圆锥花序的；苞片相当小。
Panicle laxly branched, usually large, with several to many racemes or smaller panicles; bracts rather small.
多年生植物具纤细，分枝；果长圆形或椭圆形。
Perennials with slender, branched caudices; fruit oblong or elliptic.
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