The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.
The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.
内皮层皮层的最内层，在根、茎的导管组织周围形成一道叶鞘（茎衣）
The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.
内皮层皮层的最内层，在根、茎的导管组织周围形成一道叶鞘（茎衣）