8t GENERIC RULES. 



amples SheffiehJa which is a Samolus, Hecato- 

 nia is Adonis, ^»c. 



8. As soon as a good name is given to a Ge- 

 nus, it must never be changed. Lin. 219. 



9. Not even for a better one, or another more 

 convenient. Lin. 245. 



10. Names must not betransfered from a Ge- 

 nus to another on any account of convenience, 

 becoming a double change. Lin. 245. 



11. If similar names are given to two or 

 several Genera; this name must be left to the 

 first in date, and the later must be changed. 

 Lin. 217. Apply this to Auhletia, Persoonia^ 

 Heritiera, &c. 



12. If several good names are given to a Ge- 

 nus, the first in date must prevail, and the oth- 

 ers be dismissed. Example. Artocarpus of 

 Forster which has prevailed over Sitodium^ 

 Polyphema and Kademachera. 



13. But when of two names, the first is im- 

 proper, the second in date if good must prevail. 

 Example Pyrularia Mx. dismissed for Hamil- 

 tonia W. 



14. If two names are given the same year, 

 the best must prevail, even if later by some 

 months. Ex. Polypogon Desf. prefered to San- 

 tia of Savi. 



15. Generic names must have a meaning or 

 derivation, even if obscure. L. 220. But names 

 must not be changed on that mere score, and 

 thus Linneus kept Bryonia, Acalypha, <Slc. 



16. Generic names contrasting or at variance 

 with some Species of the Genus, must be avoid- 

 ed. Lin. 232. Ex. Gratiola, Cyanella. 



17. Synonymic names in greek and latin 

 must be avoided, but not changed. Ex. Stellaria 

 and Asterias ; but Xster is worse. 



