214 HOW TO KNOW THE MOSSES 



referring to the branches hooked at the tips from the 

 curved leaves. 



a. Leaves short, mostly turned to one side and strongly 



curved . . . . D. micinatus. 

 h. Leaves longer, equally spreading; curved, chiefly at 

 tips of stems; plants often floating .... 



D. fluitans and varieties. 



a 



Plants growing in loose mats on the ground, on decaying 

 logs, and on stones in moist woods; light green; common; 

 fruit occasional. 



Stems prostrate or ascending, 1-3 

 inches long; irregularly or distantly 

 pinnately branched; hooked at tips, from 

 curved leaves. 



Leaves usually strongly curved and 

 turned to one side; light green. 

 Seta about i inch long; reddish. 

 Capsule long- or short-cylindrical, 

 incUned and curved; reddish-brown; 

 mature in summer. 

 Operculum cone-shaped. 

 Range, almost a cosmopolitan species. 



Drepanocladus uncinatus (Hedw.) Warnst. {Hyp- 

 num uncinatum Hedw., Uypnum aduncum L.) is fre- 

 quently found in moist woods of mountainous or hilly 

 regions. It varies a good deal, but at least some of the 

 branches will show the strongly curved leaves turned to 

 one side. It is the commonest pleurocarpous moss with 



Drepanocladus 

 uncinatus 



Branch enlarged. 



