THE EEIAN OR DEVONIAN FORESTS. 



73 



Fig. 23. — Erian ferns (New Brunswick), b, Cyclopteris valida, and 

 pinnule enlarged, d, SpTienopteris marginata, and portion enlarged. 

 e, Sphenopteris Hartii. g, Hymenophyllites curtiloous. h, Hymeno- 

 phyllites Gersdorffii, and portion enlarged. I, Alethopteris discrepans, 

 k, Pecopteris serrulate/,, l, Pecopteris preciosa. m, Alethopteris Perleyi. 



