THE CARBONIFEROUS FLORA. 



127 



FIG. ^.Alethopteris grandis (Dawson). Middle coal-formation of Nova 



Scotia. 



FIG. 53. Cyclopteris (Aneimites) Acadica (Dawson), a tree-fern of the 

 Lower Carboniferous, a, Pinnules, b, Fragment of petiole. , Re- 

 mains of fertile pinnules. 



