溪黄草药材的显微鉴别研究

对不同基源的溪黄草药材进行显微鉴定。【方法】分别取不同基源的溪黄草——溪黄草、狭基线纹香茶菜、细花线纹香茶菜、线纹香茶莱的成熟叶片、叶片中部及中上部干燥叶,采用不同的方法制片后,显微镜下观察比较叶表皮、叶横切面和叶粉末的结构特征。【结果】4种溪黄草标本的叶表皮在表皮细胞、气孔分布、非腺毛、小腺毛、腺鳞等部位, 叶横切面在表皮细胞、表皮细胞垂周壁外切向壁、腺毛、非腺毛、腺鳞、气孔、叶肉、主脉、维管组织等部位,叶粉末在表皮细胞、气孔、腺鳞、腺毛、非腺毛、导管等部分均存在不同程度的差异。【结论】不同基源的溪黄草药材在叶表皮结构、叶组织结构和叶粉末几方面均具有不同的显微鉴别特征。

Microscopic Identification of Medicinal Material of Herba Rabdosiae Serrae

Objective] To make a microscopic identification of medicinal material of Herba Rabdosiae Serrae (HRS) from different plant resources. Methods] The dry leaves of the whole, the middle part and the upper-middle part from the plants of Isodon serra (Maxim.) Kudo, Isodon striatus (Benth.) Kudo, Isodon lophanthoides var. geradianus (Benth.) Hara, and Isodon lophanthoides Hara var. graciliflorus (Benth.) Hara were sliced by different methods. Structure of leaf epidermis, the transverse section of leaf and structure of leaf powder were observed under light microscope. Results] There existed differences in epidermal cells, stomata distribution, nonglandular hair, glandular hair, small glandular hair and glandular scale of leaf epidermis from four kinds of medicinal plants of Herba Rabdosiae Serrae . And there also existed differences in epidermal cells, anticlinal wall and external-section wall of epidermal cells, nonglandular hair, glandular hair, glandular scale, stomata distribution, mesophyll, main vessels, and vascular bundle of leaf transverse section, as well as in epidermal cells, stomata distribution, glandular scale, nonglandular hair, glandular hair and ducts of leaf powder from four kinds of medicinal plants of Herba Rabdosiae Serrae. Conclusion] Medicinal plants of different kinds of Herba Rabdosiae Serrae have different microscopic identification structure in leaf epidermis, leaf transverse section and leaf powder.