326 



PKOCEEDIISrGS OP THE GEOLOGICAL SOCIETY. [May 7, 



Geological and Geographical Distribution of the Devonian Plants of 

 Eastern America. 



Names of Speciei. 



rian. 



Lower 

 Devo- 

 nian. 



Middle 

 Devonian. 



Upper 

 Devonian. 



1 

 5 



a, 

 O 



1 





i 



1 



1 



% 



J 



I 



2 



.2 



c 



c 



1 . Syringoxylon mirabile 









* 







3. Halli . 





























... 



... 











5. Prototaxites Logani f 







* 

















* 



















* 









8. Simplicitas 



9. Syringodendron gracile 









* 



























* 











11. ■ ficoides 















* 





i«- 



12. Didymophjllum reniforme ... 



13. Calamites Transitionis 

























* 



... 



* 

 * 



















15. inomatus 











* 



















Mr 







17. latifolia 



























































* 



















21. Annularia acuminata 











" 











22 Snliftnonyivniirn nnrinnnm 









































24. Lepidodendron G-aspianum . . . 







* 





^ 



if 





^ 























it 

 it 



27. Sagenaria Veltheimiana + 



28. Lepidostrobus Richardsoni 













* 







^ 





* 

























30 IJycopodites Matthewi 















* 



















* 

 ^ 









32 Psilophyton princeps 



* 



•«■ 



♦ 





^ 



* 











it 

 * 



























35. Selaginites formosus 



3o liBptxDplilcfiUJii i*lioinbicu.ui 







* 





* 













^ 









37. Cordaites Eobbii 















it 









* 



* 



^«■ 



* 









39. Cordaites? 













40. Megaphyton ? 













«■ 









41. Cyclopteris Halliana 













* 































t This species was not noticed in the descriptions, as no new facts relating to 

 it had been obtained. 



J I have marked this species as occurring in Pennsylvania, being of opinion 

 that it is the same with Lepidodendron primcevuTn of Rogers. 



