【摘要】 通过植物形态解剖学方法研究4种药用芦荟的叶的结构，结果表明：它们都具有旱生多浆植物叶的结构特征。表皮及角质层厚，气孔下陷，孔下室大。叶肉分为二部分，由同化薄壁组织和储水组织组成．同化薄壁组织由多层细胞组成，细胞形态相似，不分化为栅栏组织和海绵组织。储水组织占据叶的体积一半以上，细胞大、不规则、壁薄，富含粘液。维管束具鞘，呈环状分布。紧靠同化组织的维管束韧皮薄壁组织发达，具有合成和储存芦荟素的大型薄壁细胞。4种植物中，皂叶芦荟旱生特征最为明显。更多还原

【Abstract】 The leaves of four plants－Aloe vera L. var. chinensis,A. vera L., A. arborescens and A. saponaria were examined with anatomical and morphological methods. It is indicated that they are commonly characterized of the xerophyte by their outer wall of epidermis 1lack of differentiation of spongy and palisade tissues and on a large scale of aqueous tissues which occupy the main part of the whole transection of the leaf. Scattered vascular bundles which possess the sheathes distribute between the assimilting tissues and aqueous tissues in a ring. In this type of vascular bundles, several phloem pole parenchymatous cells are large and well－developed. Anatomica1 observations support the idea these cells act as the synthesized and storage place of aloin－ There is another ring of vascular bundle which is surrounded by aqueous tissue at the base of A. vera L. var chinensis,however,its structural feature is similar to the typical vascular bundle of monocotyledon.更多还原