南丹金线兰的植物形态和显微鉴定

采用生药学显微鉴定方法研究南丹金线兰(Anoectochilus nandanensis)的原植物形态、组织构造及粉末显微特征。南丹金线兰叶片呈卵形或卵状披针形，具金红色叶脉，花不倒置；唇瓣白色，呈Y字形，前部明显扩大并2裂，裂片狭长圆形，中部收狭，其两侧呈向下的细齿状或角片状，两侧白色细齿各4～5条。显微结构中，根、茎横切面中皮层明显，具草酸钙针晶、粘液细胞等；叶横切面上表皮细胞形状为乳突状突起。粉末中可见草酸钙针晶和导管。这些特征可为南丹金线兰的生药鉴别和资源开发利用提供参考依据。

Morphological and Microscopic Identification of Anoectochilus nandanensis

The pharmacognostical identification method was used to examine the original plant, tissue structure and microscopic characteristics of Anoectochilus nandanensis. Leaves were ovate or ovate elliptic with golden red veins. Non-inverted white flowers had Y-shaped and yellow labellum, which were anteriorly enlarged and 2-lobed. The lobes were narrowly oblong, and its two sides showed the serration or downward angle shape, with 4 to 5 white serration on each side. In the microscopic structure, the cortex in the cross section of root and stem was obvious, with calcium oxalate needle crystal and mucous cells. The epidermal cells on the cross section of the leaves were papilloid in shape. This study provides reference basis for the identification of crude drugs and the exploitation and utilization of the resources.