来源于铁线莲属透骨草的鉴别研究

Studies on Identification of Tougucao Derived from Clematis Species

对作透骨草入药的５种铁线莲属植物：黄花铁线莲Ｃｌｅｍａｔｉｓｉｎｔｒｉｃａｔａ、芹叶铁线莲Ｃ．ａｅｔｈｕｓｉｆｏｌｉａ、粉绿铁线莲Ｃ．ｇｌａｕｃａ、甘青铁线莲Ｃ．ｔａｎｇｕｔｉｃａ和棉团铁线莲Ｃ．ｈｅｘａｐｅｔａｌａ的茎进行了比较形态组织学研究，发现了茎中由初生韧皮纤维束和木化孔纹细胞组成的厚壁细胞环带及薄壁性三生构造环带，并提出了形成层环直径比的参数用于鉴别。根据厚壁细胞环带的有无、毛茸的大小和细胞个数，纤维细胞壁的厚度及ＲＣＲ值等列出了比较表和检索表。

Comparative studies were carried out on the morphology and histology of 5 Clematis species,namely,C.intricata,C.aethusifolia,C.glauca,C.tangutica and C.hexapetala,allegedly used as 'Tougucao'.New characteristics,a sclerenchymatous ring composed of primary phloem fibers and lignified parenchyma cells,and a parenchymatous tertiary ring were discovered.A parameter representing the ratio of the diameter of cambium ring to the diameter of the stem (RCR) is created.A key for identification of the stems of the above five species is made according to the presence or absence of the sclerenchymatous ring,the diameter and numbers of hair cells,the thickness of fiber wall and the value of RCR,etc.