菱叶红景天的显微鉴定

Microscopic Identification of Rhodiola henryi

目的:弄清菱叶红景天的根茎、根、茎、叶及粉末的显微特征。方法:显微鉴定。结果:菱叶红景天根和根茎的薄壁细胞内常含棕色物质;茎中形成层部位有纤维环,且有纤维束包绕在韧皮部周围;叶上、下表皮细胞大小不一,间有大型细胞;粉末中可见气孔多为不等式,花粉粒圆球形成或扁球形,有3个萌发孔沟,外壁具不规则网纹。结论:上述显微特征可作为菱叶红景天的鉴别依据。

Objective:To study the microscipic characteristics of the rhizoma, root, stem, leaf and powder of Rhodiola henryi. Method: By microscopic observation. Results: The brown substance was always found in the rhizoma and root of Rhodiola henryi. There was a fiber ring in the cambium region of the stem, and some fiber bundles surrounded the pholem. The epidemis cells of the leaf were different in size, and some were very large. Most stomata were anisocytic. The pollen grains were spherical or oblate, with irregularly reticular veins on the outer walls and three germ pore furrows. Conclusion:The above-mentioned characteristics provided a basis for the identification of Rhodiola henryi.