82 Frederic E. Clements 



XI 



In proposing generic names, the following rules are to be observed: 



(1 ) The name shall be a Greek substantive, i. e., not a simple adjective. 



(2) A single generic name may be founded upon the name of a botanist. 

 Such namss are only to tis formed by adding -la to cognomina ending in a con- 

 sonant and -a to cognomina in a vowel or -/-, except in the case of names al- 

 ready Latinised, in which case the termination is first dropped. 



(3) Personal generic names shall be bestowed only in recognition of emi- 

 nent services in botany. 



(4) Anagrams and geographical names are invalid. 



(5) Double generic names are invalid. 



Generic names should in the future be formed exclusively from 

 Greek, as simple Latin nouns suitable for plant names have been 

 practically exhausted, and the formation of compound terms in 

 Latin is awkward. Greek nominal stems of all sorts, simple or 

 compound, with the exception of simple adjectives, such as /Aapos, 

 fu'yas, etc., are readily available. The proposal of generic names 

 in honor of rulers, patrons, collectors, friends, and relatives 

 should be severely discountenanced. Furthermore, duplicates of 

 the same personal, as Saccardaea, Saccardia, Pasaccardoa, Sac- 

 cardoella, Saccardinula, and Beccaria, Beccariella, Beccarianthus, 

 Beccardinda, and Beccariodendron must be regarded as invalid, 

 because their terminations are no longer significant endings, but 

 mere variations, and also because they are hybrids. Anagrams, 

 as has been pointed out before, fall because they are vernacular, 

 or mutilated, or both. Geographical names are almost invariably 

 vernacular also. Double generic names, such as Dens-canis and 

 Bursa-pastoris are compounded syntactically and are hence in- 

 valid, while others, such as Genisto-Spartium and Lilio-Nareis- 

 sus are mere hybrids. 



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