GENERIC RULES. Off 



18. If a new Genus to be established has a 

 convenient specific Synonynie, it must be adopt- 

 ed for the Genus. 



19. If a Genus is to be divided, the old name 

 must be left to the majority or best known spe- 

 cies, 



20. Generic names must always be substan- 

 tive and never adjective. Lin. 221. Thus Glori- 

 osa and Mirahilis were changed by Jussieu to 

 Methonica and Nyctago. 



21. Generic names must always be simple, 

 never double nor triple. Lin. 222. 



22. They must be singular, never plural, but 

 may be masculine, feminine or neutral. 



23. A specific name changed to generic name 

 becomes substantive. Ex. Agrimonia eupatori- 

 um and Eupatorium. 



24. The name of a Class, Order or family 

 must never become Generic, unless properly 

 modified. Lin. 212, 233. Fteris which means 

 Fern must be changed to Peripteris or Yterllis. 



25. The generic names of animals must not 

 be applied to Plants, nor viceversa. Lin. 230. 

 Taxus animal must be Melesius. Leucosia 

 plant Leucipus, being posterior to Leucosia 

 animal. 



26. Names of minerals must be avoided in 

 Botany, but a few adopted may be tolerated. 

 Ex. Hyacinthus, Fhimbago, Heliotropium. 



27. Names derived from arts and sciences, 

 or religious ideas, can only be admitted when 

 properly modified. Ex. Jacobea, Angelica., Vnl- 

 neraria, Ternatea., Slc. are tolerable names ; 

 but Cotyledon^ Baca, Baltimora, ought to be 

 changed in Cotylaria, Cletertis, JBaltimorea. 



28. The best names are derived from the 

 greek and from striking habit and characters or 



