论文部分内容阅读
黄连木药用部位茎和叶的维管束的韧皮部内均有分泌道，其直径约２０～４０μｍ，幼茎的皮层及髓部都有大量的单宁细胞，但不具分泌道。黄连木的叶为羽状复叶，叶片的叶肉分栅栏组织和海绵组织，栅栏组织细胞一层
Coptis wood medicinal parts of the stem and leaves of the vascular bundles have phloem within the secretion of its diameter of about 20 ~ 40μm, young stem cortex and pith have a lot of tannin cells, but not with the secretion of the road. Coptis leaves for the pinnate leaves, leaves of the leaves of fences and spongy tissue, palisade tissue layer