XX11 EXPLANATION OP THE PLATES. 



4. B. calcarea. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. portion of inner peristome of B.fontana, magnified. 



5. Entosthodon Templetoni. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



6. Eunaria hygrometrica. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. portion of outer peristome, magnified. 



e. portion of inner peristome. 



7. Meesia uliginosa. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. portion of peristome, magnified. 



e. spore, magnified. 



PLATE XVII. 



1. Cinclidium stygium. 



a. plant, nat. size. 

 6, leaf, magnified. 



c. sporangium, magnified. 



d. portion of peristome, .magnified. 



2. Mnium affine. 



a. female plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. male plant, nat. size. 



