下延叶排草茎叶的显微结构研究

Research on Microscopic Structure of Stem and Leaf of Lysimachia decurrens

实验研究表明下延叶排草的显微结构鉴别特征为:茎的皮层中可见分泌道散在,中柱鞘纤维环状排列;髓大,中央具众多分泌道。叶上表皮细胞有放射状角质层纹理;并有类圆形油细胞散在;异面叶,中脉维管束2个,大小悬殊。

Objective: This paper reported microscopic characters of Lysimachia decurrens. The results showed that secretory canals were scattered in the cortex, pericycle fibres arrayed annularly and pith was large with many secreory canals in the transverse section of the stem. It also showed radiate cuticula grains and round oil cells were found in the upper epidermis cells of leaf, which was bifacial and contained two midrib vascular bundles,one much bigger than the other.