七指蕨科和瓶尔小草科植物的叶表皮特征  

THE LEAF EPIDERMIS OF HELMINTHOSTACHYACEAE AND OPHIOGLOSSACEAE

作　　者：焦瑜 陈立群[1,2] 宋书银 

机构地区：[1]昆明市园林科学研究 [2]中国科学院植物研究所

出　　处：《植物研究》1999年第2期131-135,共5页Bulletin of Botanical Research

基　　金：国家自然科学基金

摘　　要：在光学显微镜和扫描电子显微镜下，对七指蕨科和瓶尔小草科３个属（七指蕨属、带状瓶尔小草属和瓶尔小草属）３种代表植物的叶表皮内外面进行了观察。它们的表皮细胞形状较规则，垂周壁平直或略有弯曲，气孔器长轴与叶片长轴平行或近平行，保卫细胞下陷；但三属叶表皮在表皮细胞形状、细胞垂周壁的弯曲程度、气孔器的分布与类型方面，存在明显差异。The outer and inner surfaces of leaf epidermis of three genera ( Heminthostachys, Ophioderma, Ophioglossum) in Heminthostachyaceae and Ophioglossaceae were investigated under light and scanning electron microscopes. Their epidermal cells are regular with straight or slightly curved anticlinal walls. The longitudinal axes of stomatal apparatus generally parallel with the long axis of the lamina. Guard cells somewhat sunken. The epidermal features of the three genera are different in the outline of epidermal cells, the degree of curved anticlinal wall of epidermal cells, the distribution and types of stomatal apparatus. These differences contribute evidences for systematics of Ophioglossales.

关 键 词：七指蕨科 瓶尔小草科 叶表皮 气孔器 

分 类 号：Q949.366.2[生物学—植物学]