EXPLANATION OF THE PLATES. 



4. H. stramineum. 



a. leaf, magnified. 



b. sporangium, magnified. 



5. H. trifarium. 



a. leaves, magnified. 



6. H. cordifolium. 



a. leaves, magnified. 



b. young veil, magnified. 



c. sporangium, magnified. 



PLATE VIIT. 



1. Hypnum cuspidatum. 



a. leaf, magnified. 



b. sporangium, magnified. 



2. H. Schreberi. 



a. leaves, from before and behind, magnified. 



b. sporangium, magnified. 



3. H. purum. 



a. leaves, from before and behind, magnified. 



b. sporangium, magnified. 



4. Thuidium tamariscinum. 



a. leaves, magnified. 



b. sporangium, magnified. 



5. Hypnum Blaudovii. 



a. leaf, magnified. 



b. leaf, seen from behind, with down-like paraphylla. 



c. sporangium, magnified. 



PLATE IX. 



1. Hypnum splendens. 



a. leaf, magnified. 



b. sporangium, magnified. 



