柽柳属植物镜下器官特征描述及分类学意义

Study on Organs Morphology and its Taxonomic Significance of Tamarix L.

新疆柽柳属植物为新疆重要的固沙植物 ,有 18种 1变种。面积大 (553万hm2 ) ,分布广。由于花器小不易观察 ,种间易杂交 ,使本属植物成为有花植物中分类最为困难的属之一。为精确分类 ,为该属植物分类提供解剖学依据 ,本实验将新疆的 14种柽柳植物的叶、花、种子等器官在解剖镜下放大二十倍 ,进行观察描述 ,并对关键特征拍照。总结出结构典型、特征稳定、专属性强的识别特征 ,且易掌握、好记忆 ,使种间性状的相识性明显区分开来。以多层次多角度反映出种的全貌。研究结果为近缘植物分类提供了新的证据和建议 ,一些器官描述提出质疑 ,以供商榷。

Tamarix L.is good sand-fixing plants in desert zone in China. There are 18 species with a wild distribution in Xinjiang. Owning to its small flowers and easy to hybrid between species, Tamarix is one of the most difficult genera on taxonomy in flowering plant. This paper reports main organic character of leaves, flowers and seeds of 14 species of Xinjiang under anatomical lens and summarize some typical and stable characters as recognition marks. The marks are easy to master and remember. The characters of species are described in detail with LM photographs. The results will provide new evidence and sugestion for the taxonomy of Tamarix.