H E P A T I C M. 239 



Jungermannia minutissima. Hook. Brit. Jung. t. 52. ' Enql Bot. t. 

 J633. 



HAB. Trunks of trees, especially Holly and Ash, South 



and West of England, and South of Ireland. 



70. J. calyptrifolia ; stem creeping branched, leaves unequally 

 two-lobed, the superior lobes larger calyptriform, the in- 

 ferior ones obtusely quadrate circumvolute, fruit lateral, 

 calyces oblong depressed at the apex plane quinquedentate, 

 the mouth minute contracted. 



Jungermannia calyptrifolia. Hook. Brit. Jung. t. 43. Engl. Bot. t. 

 2538. 



HAB. Trunks of trees, rare, South of Ireland and in 

 Cumberland. 



* * * Lower or smaller segments saccate. 



71. J. HutchinsicB ; stem creeping branched, leaves unequally 



two-lobed, superior lobes ovate spinuloso-serrate, the lower 

 ones minute saccate at the base frequently unidentate, 

 stipules roundish ovate subserrate acutely bifid, fruit lateral, 

 calyces obcordate triangular. 



Jungermannia Hutchinsise. Hook. Brit. Jung. t. 1. Engl. Bot. t. 

 2480. 



HAB. Caverns, and by water-falls, South of Ireland, very 

 rare. 



72. J. dilatata; stem creeping irregularly branched, leaves un- 



equally two-lobed, superior lobes roundish saccate, stipules 

 roundish plane emarginate, fruit terminal, calyces obcordate 

 tuberculated triangular. 



Jungermannia dilatata. Hook. Brit. Jung. t. 5. Engl. Bot. t. 1086. 

 (J. tamariscifolia. j 



HAB. Trunks of trees, very frequent. 



73. /. Tamarisci ; stem creeping pinnatedly branched, leaves un- 



equally two-lobed, superior lobes ovato-rotundate, inferior 

 ones minute obovate saccate, stipules subquadrate emarginate 

 the margins revolute, fruit on short terminal branches, 

 calyces obovate smooth triangular. 



Jungermannia Tamarisci. Hook. Brit. Jung. t. 6. Engl. Bot. t. 

 2480. 



