245 HANDBOOK OF BRITISH HEPATIC*. 



Bot. t. 2750, figs. 15, 1 6. Jungermannia 

 Ralfsii, Wils. Eng. Bot. Supp., t. 2874, t. 2750, 

 figs. 15, 1 6. Petalophyllum Ralfsii, Gottsche 

 Syn. Hep., p. 472 ; Gott. and Rab. Exs. No. 

 448 ; Carr. and Pears. Exs. No. 214; Cooke 

 Hep. f. 1 66, 167. Codonia Ralfsii, Dumort. 

 Hep. Eur. p. 16, t. i, f. 2. 



Dioicous. Growing close to the ground, with 

 spreading, obovate, forked divisions, sometimes 

 simply obovate, flattish, beset on the upper side 

 with erect lamellar processes, disposed in radii 

 towards the extremity of the frond, which is 

 somewhat emarginate, colour light green, tex- 

 ture rather flaccid, except the thick midrib which 

 is often lengthened out at the base of the frond, 



170. 171. 



and denuded so as to resemble a stipe. Midrib 

 covered beneath with fibrous radicles. Perianth 

 widening at the mouth, broad in proportion to its 

 length, the sides ribbed or lamellate. Calyptra 

 concealed. Capsule round, olive brown, opening 

 irregularly. Elaters bispiral (figs. 170, 171). 



