— 63 — 



And also in the American Code, motive 8, there are the following words. 

 ' When a species or subdivision of a species is divided into two or 

 more groups of the same nature, the name must be kept and 

 given to the division containing the nomenclatorial type.' 

 According to these rules, we should retain the name of Salix macro- 

 lepis to the Salix macrolepis in Andersson's Monographia. Hence, 

 the combination Chosenia macrolepis Komarov loses its validity. Salix 

 bracteosa is pure Chosenia described only two years later than Salix 

 macrolepis Turczaninow. For this reason, the writer made a new 

 combination of Chosenia bracteosa. 



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