In the main vein there exist some abnormal vascular bundles . salt glands were observed on epidermis . the cutin layer is thin 叶脉为异形维管束；叶上表皮有盐腺；角质层薄；栅栏组织中有巨型簇晶存在于胞间空腔中。
2.
Is different from the other 4 species of plants in test in that the cutin layer out of the stem is thick . huge crystals were found in cortex cavities . cortex comes to be aerenchyma 李与其它四种材料不同，茎的表面覆盖有厚的角质层；皮层内有大型菊花状簇晶，存在于胞间空腔内；皮层形成通气组织；环髓带明显。
