THE CARBONIFEROUS FLORA. 



129 



FIG. 56. Tree-ferns of the Carboniferous. A, MegapTiyton magnificum, 

 Dawson, restored. B, Leaf-scar of the same ? two thirds natural size. 

 B I . Row of leaf-scars, reduced, c, Paloeoptems Hartii, scars half natu- 

 ral size. D, Palceopteris Acadica, 



scars half natural size. 

 K 



