PLATE V. 



1. Hypnum albicans. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. lid, magnified. 



2. H. Iute3cens. 



a. leaf, magnified. 



b. sporangium, magnified. 

 8. H. plumosum. 



a. leaf, magnified. 



b. sporangium, magnified. 



4. H. velutinum. 



a. leaf, magnified. 



b. sporangium, with peristome, magnified. 



c. sporangium, with lid, magnified. 



5. H. rutabulum. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. part of peristome, magnified. 



d. ring, magnified. 



6. H. rivulare. 



a. leaf, magnified. 



b. sporangium, magnified. 



