A small,thin,usually dry,often appressed plant structure,such as any of the protective leaves that cover a tree bud or the bract that subtends a flower in a sedge spikelet. 鱗苞一種小而薄的,通常是干的緊貼植物結構,如任一種覆蓋樹苞的保護性葉片或莎草屬植物的小穗中包住花朵的苞片