lower epidermis

An adaptive feature of plant to reduce water loss; the stoma is enclosed in crypts on the lower epidermis.

植物为减少水分散失的一个适应特征，气孔位于下表皮凹入的位置。

Cluster Analysis of Weedy Rice and Cultivated Rice Based on the Structural Characteristics of Leaf Lower Epidermis

杂草稻和栽培稻叶片下表皮结构特征的观察及聚类分析

At first, the spots occurred on the margin or blade of leaf, which were approximate rounds or half round taupe spots. The colour of spots on the upper epidermis was brown and light brown on the lower epidermis.

一般先从下部叶片开始发病，逐渐向上蔓延。病斑出现在叶缘和叶身，呈近圆形或半圆形斑点，叶正面斑点为褐色，背面为浅褐色。

Typical stoma clusters were existed on the lower epidermis of the middle part of grape leaves.

叶片中部下表皮存在典型的由气孔及其周围体形较小的气孔形成的气孔群。