HANDBOOK OK UKITISH llEPATIC/t. 



245 



Moist banks. (Fr. Aut. Spr.) 



Growing detached, or thickly matted in patches 

 of many inches. Stems pro- 

 cumbent, flat, one to three or 

 four h'nes long, cylindrical or 

 compressed, simple, or more 

 rarely once or twice dichoto- 

 mous. Leaves closely placed, 

 obliquely decurrent, horizontal, 

 rather square, waved, cut into 

 two, three, or four obtuse notches 

 at the apex, forming blunt 

 segments, pale green. Calyx 

 singly or two to three together, 

 large, campanulate, with a cleft 

 at the margin, the border cre- 

 nate and waved (fig. 168), five 

 minute stipulate processes at the 

 times the calyx is cut into three or four unequal seg- 

 ments. Calyptra spherical, white. Capsule spheri- 

 cal, reddish brown, thin and delicate, bursting 

 irregularly. 



Elaters of two or more spirals. Spores round, 

 with elevated parallel or radiating ribs, rarely anas- 

 tomosing, 40-45/x diam. 



Some- 



Fossombronia caespitiformis, De Not. 



Stem simple, very short ; leaves undulate, 

 apex angularly toothed. Perianth terminal, 

 plicately waved, rather denticulate. Spores 

 spinulose. 



Lichenastrum pi}innlis, &c., Dill. Muse. 493, 



