籜發育特色為:每節一片、左右互生、相對包覆於稈或筍的外圍。 籜的結構與葉相似,分為:籜鞘、籜耳、籜舌、籜葉;籜鞘相當於葉鞘,但面積大而為包覆的主要結構,其頂端兩側常具籜耳,籜鞘頂端內面又常具籜舌,相當於葉舌,而籜葉也長在籜鞘頂端,相當於葉身(葉片),但短小呈三角形。籜的外型與質地(革質、膜質、紙質)與是否自動脫落或宿存,在竹亞科的鑑別分類上有重要的參考價值[為何?][1]。
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