PLATE XII. 



1. Hypnum pulchellum. 



a. leaves, magnified. 



b. sporangium, magnified. 



2. H. denticulatum. 



a. leaf, magnified. 



b. sporangium, magnified. 



3. H. elegans. 



a. leaf, magnified. 



b. sporangium, magnified. 



4. H. undulatum. 



a. leaf, magnified. 



b. sporangium, magnified. 



5. Pylaisia polyantha. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. portion of peristome, magnified. 



6. Homalothecium sericeum. 



a. leaves, magnified. 



b. sporangium, magnified. 



