The initiation of the secretory cavities in the leaf is basipetalous.
叶片中分泌囊的发生是向基性的。
The distributions of secretory cavities and secretory cell globules are different.
分泌囊和分泌细胞球各有其分布规律。
There are 5~8 vascular bundles arranged in arch shape. Secretory cavities are present in the ground tissue 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；
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