l62 HANDBOOK OF BRITISH HEPATIC^E. 



rather distant, semi-vertically spreading, dorsal 

 margin entire, decurrent, apex 2-3 dentate, ventral 

 margin irregularly toothed, strongly recurved (fig. 

 114). Amphigastria usually present, distant and 

 irregular. Inflorescence dioicous. Perianth later- 

 ally compressed, bilabiate. Male shoots distinct, 

 more slender. Andraecium terminal. Perigonial 

 leaves six to twelve pairs. Antheridia oval, greyish- 

 green in small groups. 



Fructification has never been met with in this 

 country. Dr. Carrington regards the P, punctata> 

 Taylor, as the typical form. " Like most plants 

 propagated chiefly by rhizomatous shoots or 

 gemmae, it exhibits great variety of aspect, and in 

 the form and toothing of the leaves." 



Plagioehila tridentieulata, Tayl. 



Stem nearly erect, flexuous, somewhat 

 branched, leaves semi-vertical, accumbent, 

 remote, wedge - shaped, 2-3 partite, re- 

 curved. 



Jungermannia spinulosa ft tridentieulata, 

 Hook. Br. Jung. No. 14. Plagiochila triden- 

 ticulata, Dumrt. Hep. Eur. 45 ; Gott. and 

 Rab. Exs. 212; Carr. Ir. Hepat. t. xi., f. 5 ; 

 Cooke Hep. 3334; Carr. and Pears. Exs. 

 No. 15. 



In mountains. 



Either creeping loosely amongst tufts of other 



