Mosses and Lichens 



Teeth (peristome) . Dark-red, each tooth divided into two 

 unequal forks, free or united by the cross-bars. 

 Annulus. Double. 



Spores. Very small, smooth, mature in early spring. 

 Distribution. Nearly universal, but not found in Great Britain. 



Leaves. 



Vein at Spore-case Spore-case 

 apex. with veil, with lid. 

 D. pallidum. 



Plant. 



The 



tinged 

 and the 

 The 



THE LITTLE-BEARD MOSSES 

 Genus BARBULA, Hedw. 



species of this genus are found in tufts or cushions 



with rusty-brown, on stone walls, rocks, tree-trunks 



ground. 



leaves usually much curled and twisted when dry are 



small, and gradually 

 lance-shaped from an 

 oval base, with a 

 round vein vanishing 

 below or rarely ex- 

 tending beyond the 

 apex ; the basal cells 

 are small rectangular 

 and transparent ; the 

 upper are small, round 

 or four-sided, often 

 obscure. 



B. caspiiosa. Leaves. 



I 7 2 



