26 LAWS OF NOMENCLATTJKE. 



(1.) Give, where possible, to tlie principal division of 

 a genus a name that, by some modification or addition, 

 may call the name of the genus to mind (for instance, 

 eu at the beginning of the name, when it is of Greek 

 origin; -astrum, -ella, at the end of a name, wheii Latin, 

 or any other modification consistent with the rules of 

 grammar and the usages of the Latin language). 



(2.) Avoid calling a section by the name of the genus 

 it belongs to, with the final -oides or -opsis ; give, on the 

 contrary, the preference to this final for a section 

 having some resemblance to another genus, by adding, 

 in that case, -oides or -opsis to the name of that other 

 genus, if it be of Greek derivation, so as to form the 

 name of the section. 



(3.) Avoid taking, as a sectional name, one already 

 in use as such, in another genus, or which is that of a 

 genus. 



Aet. 30. When it is required to express the name 

 of a section, together with a generic name and that of 

 a species, the name of the section is put between the 

 two others in a parenthesis. 



§ 5. Names of Species, of Hybrids, and of Subdivisions of Species, 

 either spontaneous or cultivated. 



Art. 31. All species, even those that singly consti- 

 tute a genus, are designated by the name of the genus 

 to which they belong, followed by a name termed 

 specific, more commonly of the adjective kind. 



Aet. 32. The specific name ought, in general, to in- 

 dicate something of the appearance, the characters, the 

 origin, the history, or the properties of the species. If 

 derived from the name of a person, it usually calls to 

 mind the name of him who discovered or described 

 it, or who may have been otherwise concerned 

 with it. 



