HANDBOOK OF BRITISH HEPATIC/E. 133 



Jungermannia umbrosa, Schrad. Samm. II., 

 p. 3 ; Hook. Br. Jung. No. 24 and Suppl. 3 ; Eng. 

 Bot. t. 2527; Gott. and Rab. Exs. Nos. 57, 355, 

 412, 425; Carr. and Pears. Exs. No. 20; Cooke 

 Hep. fig. 51. Scapania umbrosa, Dum. Rev. 

 Jung. p. 15. 



In mountainous districts. (Fr. April May.) 



Growing in small dense patches, amongst mosses. 

 Stem short, generally not exceeding inch, 

 erect, or ascendent, flexuous, pale reddish brown, 

 simple, or once or twice dichotomous, with lateral 

 innovations. Leaves bifarious, 

 horizontal, imbricate, divided into 

 two unequal adpressed vertical 

 lobes, the inferior the largest, 

 ovate, acute, recurved, and sharply 

 serrated (fig. 93), serratures irregu- 

 lar and half way down from the 

 apex. Superior lobe not so large 

 by two-thirds, rounded-ovate, 

 acute, exterior surface convex, 

 apex sharply and unequally ser- 

 rated. Colour pale yellow-green, 

 sometimes inclining to brown. 

 Texture rather firm. Perichaetial 

 leaves resembling the cauline ones, 93- 



but the inferior lobes more recurved, and the 

 superior about half their size. Calyx cylindrical 

 at the base, or ventricose, becoming depressed and 

 quite flat at the mouth, which is truncate and 

 entire. Capsule brown. Elaters bispiral. (Plate j, 

 fig- 37-} 



