MOSSES WITH A HAND-LENS 



127 



-with HypHuvi reptile. Another species, A. irriguum, is treated 

 in connection with the Water-loving Hypnums. The species as a 

 rule are hard to determine without a compound microscope and 

 -only one other is included here, although we have a much larger 

 number of common species. 



A. SERPENS (L.) B. & S., the Creeping Hypnum, is common- 

 on soil and moist rotten wood in shaded places. As will be seen 

 from the figures of the plants the leaves are almost too small to 

 handle readily with forceps, but when mounted a well developed 

 costa can be made out. The lens, however, will not show the 

 -cells. 



Figure 61. Leave? of Amhlystegium serpens, highly magnified. 



RAPHIDOSTEGIUM. 



R. EECUEVANS (Mx.) J. & S., the Common Raphidostegium, 

 looks very much like one of the true Hypnums with irregular 

 branching and secund ecostate leaves. It is a bright yellow-green 

 and grows in dense mats on rotten stumps and logs in wet 

 shaded places. It is common throughout our range, but I have 

 rarely seen it in frviit in the vicinity of New York City. The 

 -chief distinction from the true Hypnums lies in the very short 



