【摘要】 在国内长期以来都将开黄花和开白花的水龙归并为水龙（ＪｕｓｉａｅａｒｅｐｅｎｓＬ．）一个种。我们将两者从野外引种栽培，对其形态特征进行比较观察，在结构上从宏观到微观进行解剖研究。发现两者之间在形态结构上确有许多相似的特征。但两者花色的不同却是显著而且稳定，花的内部结构和花粉壁纹饰的差异也是很明显的。这些差异已构成它们各自独为一个种的条件，因此，我们认为应将开黄花的水龙恢复为一独立种———黄花水龙（Ｊ．ｓｔｉｐｕｌａｃｅａＯｈｗｉ）更多还原

【Abstract】 The morphology of pollen and flowers of Jussiaea stipulacea Ohwi and J. repens L. were extensively in the past 4 years. There are stable and remarkable differences between these two species in their flower structure, colour and pollen morphology. These result provides strong evidences that these are two different species independent to each other. It can’t be considered as only one Jussiaea repens L. speceis including the J. stipulacea Ohwi as in most botanical literatures in China.更多还原