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叶片脉序结构及其在本科植物分类中的意义叶脉是叶片的重要组成部分，既是叶片的骨架，起着支持作用，又是叶片的输导组织。它们的排列组合形式称之为脉序。每一类群都有其本身的特殊性，而整个脉序结构又总是按照一定的规律建立起来的，因此，又有其统一性。在这个既统一...
Vein vein structure and its significance in the classification of the plant leaf veins is an important part of the leaf, both the leaf skeleton, plays a supporting role, but also the leaf of the guide tissue. Their permutations and combinations are called veins. Each group has its own particularity, and the entire pulse sequence structure has always been established according to certain rules, therefore, have their unity. In this both unified