226 H E P A T I C ^3. 



scribed, nor, so far as we can discover, any mark by which to 

 distinguish it from M. hemisphcerica. 



Schmidel, under M.- hemisphcerica, t. 34. at f. 3. and XIII. 

 has figured, and has described what appear to be sessile male 

 receptacles, on the same fronds with the pedunculated ones ; 

 and this would seem to strengthen our opinion of the two 

 kinds being found on the same species. 



VI. JUNGERMANNIA.* 



Common receptacle of the fruit none. Perianth or Calyx mono- 

 phyllous, tubular, (rarely wanting.) Capsule 4-valved, 

 terminating a peduncle which is longer than the perianth. 



A. FOLIACEOUS. 



f DESTITUTE OF STIPULES. f 



a. Leaves inserted on all sides. 



1. J. trichophylla ; stem creeping irregularly branched, leaves im- 



bricated on all sides here and there fasciculated setaceous 

 jointed patent straight, fruit terminal, calyces oblong, the 

 mouth contracted ciliated. 



Hook. Brit. Jung. t. 1. Engl. Bot. t. 2252. 



HAB. Moist ground. 



2. J. setacea; stem creeping somewhat pinnatedly branched, 



leaves imbricated on all sides, two together, setaceous jointed 

 patent incurved, fruit terminal upon short proper branches, 

 calyces oblong, mouth open ciliated. 



Hook. Brit. Jung. t. 1. Engl. Bot. t. 2482. 



HAB. On the ground and decaying stumps of trees. 



3. J. julacea; stem nearly erect irregularly branched filiform, 



leaves quadrifarious ovate closely imbricated erect acutely 



* Of Jungermannia we have only given the essential character of the genus, 

 and a synopsis of the species, referring for more ample accounts, both of the 

 one and the other, to the "Monograph of the British Jungermannice." 



f We have brought here, J. Sphagni and J. compressa, which have stipules 

 only upon their young shoots. 



9 



