l62 HANDBOOK OF BRITISH HEPATIC^. 



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. Andra^cium 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." 



Plagiochila tridenticulata, 2^ayi. 



Stem nearly erect, flexuous, somewhat 

 branched, leaves semi-vertical, accumbent, 

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

 curved. 



Jungermannia spinulosa /? tridenticulata, 

 Hook. Br. Jung. No. 14. Plagiockila 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 



