126 GENERAL SYSTEMATIC BACTERIOLOGY 



section which resembles another genus, by adding in that case -aides or -opsis to 

 the name of that other genus, if it is of Greek origin, to form the name of the 

 section. 



0. Avoid taking as the name of a subgenus or section a name which is already 

 in use as such in another genus, or which is the name of an admitted genus. 



Comment. It may be noted that in zoology identical rules are used 

 for the formation of genera and subgenera, because the subgenus of 

 today maybe the genus of tomorrow and, from the standpoint of nomen- 

 clature, both generic and subgeneric names have the same status. 

 Unfortunately, perhaps, botanists have not seen fit to take this step. 



Recommendation. VII. When it is required to express a subgeneric or sectional 

 name together with the name of the genus and the name of the species, the name 

 of the section is put between the others in a parenthesis. E.g., Astragalus 

 (Cycloglottis) contortuplicatus . 



Subsection 4. Names of species and of subdivisions of species 



Article 26. All species, even those that singly constitute a genus, are desig- 

 nated by the name of the genus to which they belong followed by a name (or 

 epithet) termed specific, usually of the nature of an adjective (forming a combina- 

 tion of two names, a binomial, or binary name). 



Recommendations. VIII. The specific name should, in general, give some 

 indication of the appearance, the characters, the origin, the history or the proper- 

 ties of the species. If taken from the name of a person, it usually recalls the 

 name of the one who discovered or described it, or was in some way concerned 

 with it. 



Comment. Apparently this recommendation is sometimes taken to 

 indicate that the specific name should constitute an adequate diagnosis 

 of the organism in question. 



IX. Names of men and women and also names of countries and localities used 

 as specific names, may be substantives in the genitive (Clusii, saharae) or adjec- 

 tives (Clusianus, dahuricus) . It will be well, in the future, to avoid the use of the 

 genitive and the adjectival form of the same name to designate two different 

 species of the same genus, for example Lysimachia Hemsleyana Maxim (1891), 

 and L. Hemsleyi Franch (1895). 



X. Specific names begin with a small letter except those which are taken from 

 names of persons (substantives or adjectives) or those which are taken from 

 generic names (substantives or adjectives). 



XI. When a specific name is taken from the name of a man, it is formed in the 

 following way: 



a. When the name ends in a vowel, the letter i is added (thus Glazioui from 

 Glaziou; Bureaui from Bureau), except when the name ends in a, when e is added 

 (thus Balansae from Balansa). 



