Date palm (Phoenix dactylifera L.) is an important traditional crop having socioeconomic values. To best of literature review and our knowledge, there is a gap of taxonomic study on the role of morpho-anatomical features of date palm for correct identification of its varieties. With the advancement in the field of microscopy, anatomical features are considered very effective taxonomical markers. The present study was aimed to analyze the taxonomic variations using leaf epidermal anatomy and to highlight the importance of leaf epidermis to resolve identification ambiguities among the different varieties of date palms. The study includes analysis of leaf epidermal anatomy of 18 different commercial varieties of date palm collected from different areas of Pakistan. A diverse range of shape and size of epidermal cells, subsidiary cells, guard cells, stomata, stomatal pore was observed on abaxial as well as adaxial among studied date palm varieties via LM and found to be very helpful tool in discrimination of varieties. The shape of epidermal cells on both abaxial and adaxial surfaces varies including elongated, irregular, polygonal, curved, and spherical or sometime mixed of these. The values of stomatal indices on both surfaces showed wide variations.

中文翻译：

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使用显微镜对 18 个具有重要商业价值的 Phoenix dactylifera L. 品种进行解剖表征

枣椰树（Phoenix dactylifera）L.) 是一种具有社会经济价值的重要传统作物。据文献回顾和我们所知，关于枣椰树形态解剖特征对其品种正确识别的作用的分类学研究存在差距。随着显微镜领域的进步，解剖特征被认为是非常有效的分类标记。本研究旨在利用叶表皮解剖结构分析分类变异，并强调叶表皮在解决不同枣椰树品种之间的识别歧义方面的重要性。该研究包括对从巴基斯坦不同地区收集的 18 种不同商业椰枣品种的叶表皮解剖结构进行分析。表皮细胞、辅助细胞、保卫细胞、气孔、通过 LM 在所研究的枣椰树品种的背面和正面观察到气孔孔，发现它是区分品种的非常有用的工具。表皮细胞在背面和正面的形状各不相同，包括细长的、不规则的、多边形的、弯曲的和球形的或有时这些的混合。两个表面的气孔指数值表现出很大的变化。