Abstract: China, mother of gardens, has many kinds of flowers with abundant resources，however, there are many and serious problems about flower names such as the same flower with different names and the different flowers called the same name on account of history, society and manmade reasons. Meanwhile, some flowers scientific names（Latin names）and common names in the publications are not in consistent with each other，which has caused great confusions in the floricultural market in our country. All above is favorable neither to the internationalization of our floricultural industry nor to the scientific research of horticultural workers. Based on the International Code of Botanical Nomenclature and International Code of Nomenclature for Cultivated Plants and taken Spiraea for example in which some flower names and Latin names are unfit for the rules of plant nomination, the rules obeyed when naming the flowers were raised, the confusion reasons of flower names were concluded, as well some measures to prevent the confusions were put forward.

Key words: flower names, confusion, Spiraea Linnaeus