104 HANDBOOK OF BRITISH HEPATIC^. 



In moist places on the ground. (Fr. Spring.) 

 Growing in small rather densely crowded patches 

 of pale green colour, with a faint tinge of purple. 

 Stems five to six lines long, 

 slender, thread-like,flexuous, 

 simple below, and usually 

 bare, simple above or once 

 or twice divided, with nar- 

 row branches, usually erect, 

 sometimes procumbent, pale 

 yellowish green. Leaves 

 bifarious, alternate, more or less close, usually 

 a little imbricated, erect or rather spreading, 

 ovate, concave, cleft acutely from the apex, for 

 about one-fourth, into two equal, somewhat obtuse, 

 segments (fig. 77). Perichaetial leaves seven or eight, 

 increasing in size upwards to the insertion of the 

 calyx, where they are twice or thrice the length of 

 the cauline leaves, imbricated, oblong, subquadrate, 

 concave or semi-cylindrical ; at the apex deeply 

 notched, segments acute, sometimes divaricate. 

 Stipules small, plane and adpressed, or projecting 

 a little, ovate, cut by an acute sinus at the apex 

 into two sharp segments. Calyx a little attenu- 

 ated at the base, slightly narrowed above and 

 plicate, mouth small and toothed. Capsule brown, 

 quadrivalvular. Elaters bispiral. 



Cephalozia fluitans, Nets. 



Stem long, sometimes very long, rooting by 

 numerous stout flagella, floating in water, 

 branches all postical. Leaves distant, lax, 

 pallid, long and narrow, under-leaves con- 



