348 



PALEOZOIC TIME. 





Genera of Coal-Plants. 



Species peculiar 



to the 

 United States. 



Species peculiar 

 to Europe. 



Species common 



to both 



Continents. 



I. Equisetites Sternb. 

 Calamites Suck. 



4 



3 



1 



1 





6 



Asterophyllites Brngt. (Calamo- 









cladus Schp.) . 



3 





5 



Calamostachys Schp. 



1 



3 



3 



Huttonia Sternb 





1 





Macrostachys Schp. . 







1 



Bornia Rom. . 



1 



1 



1 



Sphenophyllum Brngt. 



2 





6 



Annularia Brngt 



II. Sphenopteris Brngt. . 



2 





4 



14 



48 



22 



Eremopteris Schp. 







1 



Steffensia Gopp. 







1 



Adiantites Gopp 





5 



1 



Neuropteris Brngt. . 



20 



8 



16 



Odontopteris Brngt. 



9 



3 



6 



Lescuropteris Schp. . 



1 







Callipteris Brngt 



1 



2 





Cyclopteris Gopp. (Palaeopteris 









Schp., Noeggerathia Lsqx. ) 



5 



2 



3 



Triphyllopteris Schp. 





1 





Khacopteris Schp. 





1 





Pecopteris Brngt. 



15 



37 



25 



Goniopteris Presl 





1 



5 



Phyllopteris Dn. 



1 







Alethopteris Sternb. 



10 



5 



5 



Neriopteris Newb. 



1 







Beinertia Gopp, . 



1 



1 





Staphylopteris Presl. 



5 







Asterocarpus Gopp. 



1 



1 



1 



Oligocarpia Gopp. 







1 



Hawlea Corda . 





1 





Dictyopteris Gutb. 



2 



3 



1 



Lonchopteris Brngt. 



1 



5 





Schizopteris Brngt. . 







1 



Rhaeophyllum Schp. . 



5 



1 



5 



Pachypteris Brngt. . 



1 







Rhizomopteris Schp. (Stigmari- 

 oides Lsqx.) . 









8 





2 



Caulopteris L. tf H. . 





3 





Stemmatopteris Corda . 



5 





2 



Megaphytum Art. 



4 



4 





Psaronius 1 Cotta . 



10? 



2 





III. Lycopodites Auct. 



3 



8 



1 



Lepidodendron Sternb. . 



21 



30 



7 



Ulodendron Rhode 



1 



6 



2 



Knorria Sternb 







2 



Lepidophloios Sternb. 



8 



3 



1 



Halonia L. # H. . 



1 



6 



1 



Cyclocladia Goldenb. 





1 





Lepidostrobus Brngt. . 



14 



9 



4 



Lepidophyllum Brngt. 



7 



1 



4 



Schutzia Gopp 



1 







Antholithes L. <f H. . 



5 



3 





Psilophyton Dn 



1 







Psilotites Goldenb 





1 





Sigillaria Brngt. . 



18 



44 



23 



Sigillarioides Lsqx. . 



2 







Stigmaria Brngt 



6 





3 



Pinnularia L. <$• H. . 



7 





1 



1 American species are not as yet positively studied : from specimens collected in large 

 numbers ten to fifteen species are recognized (not described). (Lesquereux.) 



