EXPLANATION OF THE PLATES. XX111 



3. M. cuspidatum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



4. M. imdulatum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



5. M. rostratum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. . 



6. M. punctatum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. portion of peristome, magnified. 



7. Amblyodon dealbatus. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. portion of peristome, magnified. 



e. portion of inner peristome, more highly magnified. 



PLATE XVIII. 



1. Zieria julacea. 



a. plant, nat. size. 



b. leaf, magnified. 



c. leaf-cells, magnified. 



d. sporangium, magnified. 



2. Bryum roseum. 



a. plant, nat. size. 



