prophyll
美
英 
例句
branches arising singly from nodes and subtended by a leaf sheath and 2-keeled prophyll, often fascicled in bamboos.
枝条从节上发出,并被叶鞘和内稃包围,通常在竹子内簇生。
peduncle usually compressed, without a scalelike prophyll at base. Flowers small;
花序梗通常压缩,没有一鳞片状的先出叶在基部。