The mesophyll consists of two layers of palisade parenchyma.
叶肉是由两层栅栏薄壁组织组成。
2
The leaf anatomic structure indicated that mesophyll was without the differentiation of palisade and sponge tissue. And the mesophyll cell is large and function as water storage.
叶肉细胞没有栅栏组织与海绵组织之分，细胞比较大，有贮水作用。
3
The mesophyll is not differentiated into spongy and palisade tissues, but mesophyll near midrib in tip and middle parts of leaf is often lengthened to appear as palisade-liked tissue.