There are 5~8 vascular bundles arranged in arch shape. Secretory cavities are present in the groundtissue of petiole.
叶柄的基本组织中具有裂生分泌腔，5~8束维管束呈弧形排列或散布在薄壁组织中；
2
Some cells of the groundtissue began elongation at early dividing stage, but short cells had no elongation and remained active metabolism.
长细胞在增殖期开始伸长，短细胞始终不伸长并一直保持活跃的生理代谢。
3
The Ultracytochemical localization of peroxidase during the groundtissue development in bamboo Phyllostachys edulis culm was studied with cytochemical technology.