【摘要】 结构植物学实验表明 :铁皮石斛叶为等面叶 ,主脉处凹陷 ,两侧较厚 ;气孔只分布于下表皮 ,保卫细胞肾形 ,属四列型 .叶脉较细 ,大小相间平行排列于叶肉中间 .茎的基本组织由多角形或椭圆形的大型细胞和多数充满颗粒状物质的不规则形细胞组成 ,具有少数含针晶体束的黏液细胞 ;外韧有限维管束散生 .根具有根被 ,地下根根被有 6～ 7层细胞 ,气生根根被只有 4层细胞 ;外皮层、内皮层和中柱鞘均由一层厚壁细胞和薄壁的通道细胞相间排列组成 ;辐射维管束十原型 ,中央为大而明显的髓更多还原

【Abstract】 The results of structural botanical experiment of nutritive organs of Dendrobium candidum show:the leaf is of isobilateral;the stoma is of quadrilataral,only distributes in lower epidermis;there are alternating bigger vieins and smaller ones in the mesophyll;there are many polyhedral or ellipsoidal cells and irregular cells full of particulate matter and a few of slimy cells containing needle crystals in the ground tissue;collateral closed bundles scattered in it;the velamen of underground root consists of 6～7 layers of cells,while the velamen of air root consists of only 4 layers of cells;each of the exodermis,endodermis and pericyle consists of a layer of sclerenchymal cells and parenchymal passage cells;radial vascular bundle of the root is of tenarch there is a big and evident pith in the middle part更多还原