LAWS or NOMENCLATURE. 33 



^es than the others, it is to that part that the original 

 name is to be applied. 



Aet. 55. In case two or more groups of the same 

 nature are united into one, the name of the oldest is 

 preserved. If the names are of the same date, the 

 author chooses. 



Art. 56. When a species is divided into two or 

 more species, if one of the forms happens to have been 

 distinguished earlier than the others, the name is re- 

 tained for that form. 



Art. 57. When a section or a species is moved into 

 another genus, when a variety or some other division 

 of a species . is given as such to another species, the 

 name of the section, the specific name or that of the 

 division of the species, is maintained, unless there 

 arise one of the obstacles mentioned in Articles 62 

 and 63. 



Art; 58. When a tribe is made into an Order, when 

 a subgenus or a section becomes a genus, or a division 

 of a species becomes a species, or vice versd^ the old 

 names are maintained, provided the result be not 

 the existence of two genera of the same name in the 

 Vegetable Kingdom, two divisions of a genus, or two 

 species of the same name in the same genus, or two 

 divisions of the same name in the same species. 



Section 6. 



On Names that^are to be rejected, changed, or altered. 



Art. 59. Nobody is authorized to change a name 

 because it is badly chosen or disagreeable, or another 

 is preferable or better known, or for any other motive, 

 either contestable or of little import. 



