Abstract: The microscopic structures of roots, stems, leaves of Anoectochilus roxburghii and A. formosanus were observed by paraffin sections and epidermis. The results showed that differences of microstructure between both plants are on cortex thickness and number of vascular bundle of root, and the structure, vein color, papilate cell shape, stomatal density of the leaf. All of these differences can be used as microspcopic identification of both plants.

Key words: Anoectochilus, root, stem, leaf, microstructure

摘要： 通过石蜡切片和表皮制片观察比较金线莲Anoectochilus roxburghii和台湾金线莲A. formosanus根、茎、叶的显微结构特征。结果表明，金线莲与台湾金线莲显微结构的主要区别在于根皮层厚度、维管束数目、叶构造、叶脉颜色、表皮乳头细胞的形状和气孔密度，这些特征可作为金线莲物种的显微鉴别依据。

关键词: 金线莲, 根, 茎, 叶, 显微结构