变豆菜属植物叶表皮微形态及分类学意义

对变豆菜属(Sanicula L.)6种13个居群植物的叶表皮特征进行光学显微观察,并测定了相应的数量指标。结果表明,变豆菜属植物叶表皮形态较为一致:上表皮几乎全为多边形,垂周壁平直或弓形弯曲;下表皮多为不规则形,垂周壁浅波状、波状至深波状;气孔散生,均为不等型。但表皮细胞垂周壁式样、气孔长短轴之比等细微特征在种间存在差异,可以区分种类。因此,叶表皮特征对于变豆菜属种类的划分和亲缘关系的确定具有一定的分类学意义。

Micro-morphology of Leaf Epidermis and Its Taxonomical Significance of Sanicula L.

Leaf epidermis of 6 species and 13 populations of Sanicula were observed under light microscope and some quantity index was measured by analyses system of microphotograph.The results revealed that the epidermal structure is the same type:Almost adaxial epidermis are polygonal shapes and their anticlinalwalls are mainly straight-arched,abaxial epidermis are irregular and their anticlinalwalls undulate to sinuate.The stomata are scattered and anisocytic.But the types of anticlinalwall and the proportionment o...