ON GENERA AND SPECIES. 43 



contain the same species, or nearly so. His table of 

 arrangement, showing the distribution of the species under 

 the different sections, occupies thirteen pages of quarto of 

 his Treatise, of which the following in an abridgment : 



GENUS POLYPODIUM. 



1. Caenopteris (Adenophorus, Hook. Xiphopteris, Kaulf.). 

 2. Ctenopteris, Eupteris, vel Europteris (Grammites, Sw, 



Blume ; Ctenopteris, J. Sm. Polypodium, J. Sm.). 

 3. Csenopteris, Ctenopteris, rarissime Eupteris (Pleo- 



peltis in part, J. Sm.). 



4. Marginaria ; folia conformia (Lepicystis, J. Sm.). 

 5. Marginaria-Goniophlebium (Goniophlebium, Blume, 



J. Sm.). 

 6. Cyrtophlebium (Cyrtophlebium, R. Br. Campyloneuron, 



Presl). 



7. Doodya ; naculaa exappendiculatas (Dictymia, J. Sm.). 

 8. Doodya ; naculse appendiculataB (Phymatodes in part, 



Presl). 



9. Phlebodium (Pleopeltis in part, J. Sm.). 

 10. Marginaria ; folia difformia (Lopholepis, J. Sm.). 

 11. Phlebodium (Anapeltis, J. Sm. Phymatodes in part, 



Presl). 



12. Anaxetum (Pleuridium in part, Presl, J. Sm.). 

 13. Anaxetum (Pleuridium in part, J. Sm., Selliguea, 



Blume, Loxogramma, Presl). 

 14. Drynaria (Pleuridium in part, J. Sm. Colysis, Presl. 



Drynaria, Bory. Depteris, Beinw. Monosorum 



Linbr). 



15. Pleocnemia (Niphopsis, J. Sm.). 

 16. Pleocnemia (Niphobolus, Kaulf., Spreng., J. Sm.). 

 17. Pleocnemia appendiculata, S., Drynaria (Niphobolus, 



Presl, J. Sm.). 



