HANDBOOK OF BRITISH HEPATICVE. 105 



stantly present, inflorescence cladocarpous ; 

 female bracts tristichous, toothed at the base, 

 innermost embracing the perianth, which 

 latter is thin, linear-fusiform, trigonous. 



Jungermannia fluitans, Nees Syn. p. 129. 

 Lindbg. Sp. p. 76. Jungermannia Francisci, 

 Eng. Bot. t. 2569. Gymnocolea inflata v. 

 fluitans, Dum. Hep. Eur. 65. Cephalozia 

 fluitans, Carr. and Pears. Exs. No. 178, a b c, 

 259, 260; Spruce Cephalozia p. 50. 



In the wettest part of bogs. 



Dioicous, bright green, here and there rufous, 

 rarely rosy. Stems elongate, 2 to 3 inches, laxly 

 creeping, a little branched, rooting by rather short 

 thick flagella. Leaves assurgent, subsecund, distant, 

 inserted obliquely, oval ovate or oblong, now and 

 then rather cuneate at the base, a little concave, 

 bilobate at the apex - % way (sometimes trilobate) 

 sinus narrow, acute, lobes unequal, postical largest, 

 lanceolate, rather obtuse, margin repand, cellules 

 rather large, hexagonal, stipules distant, adpressed 

 to the stem, three times shorter than the leaves, six 

 times as long as broad, linear bifid, laciniae of unequal 

 length, margin 1-2 dentate. Flowers dioicous, 

 bracts tristichous, inner erect, ovate, oblong, bi- 

 lobed to the middle, lobes acute, 1-2 dentate 

 at the base, outer three times smaller, unequally 

 bidentate, or falcate and entire. Perianth longer 

 than involucre, oval-cylindrical, trigonous at the 

 apex, mouth truncate, almost toothless. Capsule 

 pellucid, purplish, oblong, with four linear lanceolate 

 valves. Elaters bispiral. Spores minutely rough. 



