THE EKIAN OK DEVONIAN FORESTS. 



73 



FIG. 23. Erian ferns (New Brunswick). B, Cydopteris valida, and 



E, Sphenopteris Hartii. G, Hymenophyllites curtiloous. H, Hymeno- 

 phyuites Gersdorffii, and portion enlarged, i, AletTiopteris discrepans. 

 K, Pecopteris serrulata. L, Pecopteris preciosa. M, Alethopteris Perleyi. 



