110 HANDBOOK OF BRITISH HEPATIC^. 



356; Cooke Hep. f. 93. Cephalozia divaricata, 

 Dumort. Hep. Eur. p. 89; Carr. and Pears. 

 Exs. No. 261. 



On the ground, stones, and 

 decayed wood. 



Spruce is strongly of opinion 

 that this variable species should 

 include several forms which 

 many authors have regarded as 

 distinct species, but which he 

 resolves at most into varieties. 

 These will be disposed as 

 follows : 



van o. normalis, Spruce Ceph. p. 64. Leaves 

 orbate, lobes of the leaves triangular. 



Jungermannia byssacea, Roth. Germ. III., 

 387; Hook. Br. Jung. No. 12; Mack. Hib. 

 II., 60; Mart. Erl. 166, t. 5, f. 47. Junger- 

 mannia divaricata, Nees Eur. Let). II., 241 ; 

 Gott. and Rabh. Exs. No. 59, 109. Cephalozia 

 byssacea, Dumort. Rev. Jung. p. 18; Lind. 

 Journ. Linn. Soc. XIII. 192. 



On heaths, &c.(Ftg. 80.} 



Frequently growing in dense tufts, of a dark green, 

 sometimes almost black colour. Stem very 

 slender, two to three lines long, somewhat stellately 

 branched, branches often again divided, and pro- 

 cumbent, fertile ones ascending. Leaves remote, 

 small, adpressed or spreading, nearly quadrate, 

 embracing at the base, divided at the apex about 



