The Sub-genus Pleurozium 



segments split nearly the whole length ; hair-like segments three, 

 slightly shorter. 



Spores. Mature in autumn. 



Distribution. North and South America, Europe and Asia. 



THE ARCHED FEATHER-MOSS 



HYPNUM Sub-genus PLEUROZIUM 



The species of this sub-genus increase yearly by arched 

 branches or by rigid erect growths, the branches are short, 

 unequal, and grow outward from the main stem, a character 

 which suggested the name Pleurozium, a compound of the 

 Greek m-\evpbv, a side, and of 09, a branch. 



The leaves on the stem are larger than those on the branches, 

 and are different in shape. Besides these leaves there are numer- 

 ous large and many-parted leaf-like organs (parapbyllid). 



The other characters of this sub-genus are similar to those of 

 the genus Hypnum. 



THE GLITTERING FEATHER-MOSS 

 HYPNUM (PLEUROZIUM) splendens, Hedw. 



(See Plate XXXI.) 



Habit and babitat. The Glittering Feather-moss is one of the 

 most beautiful species. It is common on rocks in deep woods, 

 in swampy places, on stumps, and on fallen trees. 



" Glittering with yellow, red and green, 

 As o'er the moss, with playful glide, 

 The sunbeams dance from side to side." 



Female plant. 



Male plant. 

 H. splendens. 

 307 



Paraphyllia. 



