Laws of Botanical Nomenclature. 73 
Art. 58. When a tribe is made into an Order, when a sub- 
genus 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 di- 
visions 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 bet- 
ter known, or for any other motive, either contestable or of 
little import. 
Art, 60, Every one is bound to reject a name in the following 
_ 2.) When it is already in use for a class or for a genus, or 
is applied to a division or to a species of the same genus, or to 
a subdivision of the same species. : 
(3,.) When it expresses a character of an attribute that is 
positively wanting in the whole of the group in question, or at 
least in the greater part of the elements it is composed of. 
(4) When it is formed by the combination of two languages. 
i G) When it is in opposition to the rules laid down in Sec- 
on 5, ! 
Art. 61. The name of a cohort, subcohort, Order, suborder, 
tribe, or subtribe, must be changed if taken from a genus found 
not to belong to the group in question. : 
. 62. When a subgenus, a section, or a subsection passes 
as such into another genus, the name must be changed if there 
is already, in that genus, a group of the same rank, under the 
same name 
When a species is moved from one genus into another, its 
specific name must be changed if it is already borne by one of 
the species of that genus. So likewise when a subspecies, @ 
variety, or some other subdivision of a species is placed uncer 
another species, its name must be changed if borne already by 
@ form of like rank of that species. . : 
Art. 63, When a group is transferred to another, keeping 
there the same rank, its name will have to be changed if it 
eads to misconception. 
Art. 64. In the cases foreseen in Articles 60, 61, 62, 68, the 
name to be rejected or changed is replaced by the oldest admis- 
sible one existing for the group in question ; in the absence 
* 
a new one is to be made 
