LAWS OF NOMENCLATURE. 35 



Art. 64. In the cases foreseen in Articles 60, 61, 

 62, 63, the name to be rejected or changed is replaced 

 by the oldest admissible one existing for the group 

 in question ; in the absence of this, a new one is to be 

 made. 



Art. 65. The name of a class, of a tribe, or of any 

 other group above the genus, may have its termination 

 altered so as to suit rule or custom. 



Art. 66. When a name derived from Latin or 

 Greek has been badly written or badly constructed, 

 when a name derived from that of a person has not 

 been written consistently with the true spellLiig of 

 that name, or when a fault of gender has carried with 

 it incorrect terminations of the names of species or of 

 their modifications, every botanist is authorized to 

 rectify the faulty names or terminations, unless it be 

 a question of a very ancient name current under its 

 incorrect form. This right must be used reservedly, 

 especially if the change is to bear upon the first 

 syllable, and, above all, upon the first letter of the 

 name. 



Wlien a name is drawn from a modern language, it 

 is to be maintained just as it was made, even in the 

 case of the spelUng having been misunderstood by the 

 author, and justly deserving to be criticized. 



Section 7. 



On Names of Plants in Modern Languages. 



Art. 67. Latin scientific names, or those that are 

 immediately derived from them, are used by botanists 

 preferably to names of another kind, or having another 

 origin, unless these are very intelligible and in common 



use. 



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