THE CARBONIFEROUS FLORA. 129 



Fig. 56.— Tree-fems of the Carboniferous, a, Megaphyton magnifiovm, 

 Dawson, restored, b, Leaf-soar of the eamej two thirds naturi size. 

 Bi, Eow of leat-soars, reduced, c, Palceoptena Hartii, soars half natu- 

 ral size> D, JPalaoptaru Acadiea, scars half natural size. 



13 



