XIV EXPLANATION OF THE PLATES. 



PLATE VI. 



1. Hypnum ruscifolium. 



a. leaf, magnified. 



b. sporangium, magnified. 



2. H. murale. 



a. leaf, magnified. 



b. young veil, magnified. 



c. sporangium, magnified. 



3. H. riparium. 



a. leaf magnified. 



b. sporangium, magnified. 



c. male inflorescence, magnified. 



d. antheridium, magnified. 



4. H. polygamum. 



a. leaf, magnified. 



b. sporangium, magnified. 



5. H. chrysophyllum. 



a. leaf, magnified. 



b. sporangium, magnified. 



6. H. stellatum. 



a. leaf, magnified. 



b. sporangium, magnified. 



PLATE VII. 



1. Hypnum palustre. 



a. leaves, magnified. 



b. sporangium, magnified. 



2. H. molle. 



a. leaves, magnified. 



b. sporangium, magnified. 



3. H. arcticum. 



a. leaf, magnified. 



b. sporangium, magnified. 



