HANDBOOK OF BRITISH HEPATIC/E. 131 



Scapania undulata, L., Bum. 



Stem erect, rather forked, leaves unequally 

 conduplicate, two-lobed, lobes entire, rounded, 

 anterior much the smallest. Perianth with 

 entire mouth. 



Jungermannia undulata, Linn. Sp. 1 59^ ; 

 Hook. Br. Jung. t. 22; Engl. Bot. t. 2251. 

 Scapania undulata, Dumort. Jung. p. 14; Gott. 

 and Rabh. Exs. No. 194, 34, 90, 91, 139, 260, 

 278, 291, 318, 387 ; Carr. and Pears. Exs. 

 21, 22, 160; Cooke Hep. fig. 42, 43. 



Wet places, among rocks. (Fr. May.) 



Growing in large closely-matted tufts. Stems 

 1 to 3 or 4 inches, simple, or once or twice (fig. 91) 

 divided, with nearly erect dichotomous branches, 

 dirty green, becoming 

 almost black. Leaves bifari- 

 ous, the lower ones small 

 and more distant ; upper 

 slightly imbricate, all 

 spreading, decurrent, and 

 half-embracing at the base, 

 divided into two unequal 

 vertical lobes (fig. 92) ; the 

 lower one the largest, ad- 

 pressed to the hinder part 

 of the stem, the upper 

 smaller by one-half, both 9i- 92. 



roundish, sometimes a little pointed, slightly waved, 

 margin entire, or obscurely crenate in a few terminal 

 ones,- thin and delicate, dull green with a purplish 



k 2 



