唇形科,多年生草本。矮叢狀,莖細長。長卵形披針形葉,基生葉,一至二回羽狀複葉,小葉卵形,葉緣有不規則缺刻,羽狀脈。聚繖花序,輪生,頂生,鐘形,二唇形,上唇全緣、略凹、或略三齒,下唇二齒裂,花冠白色,有宿萼。小型堅果。
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