94 HANDBOOK OF BRITISH HEPATICJE. 



succubous, horizontal, never deflexed, mostly 

 bilobate, margins plane or subincurved, never 

 recurved. Inflorescence uniformly monan- 

 drous. Gynaecia capitate, cladocarpous or 

 acrocarpous, bracts tristichous, perianth free, 

 trigonous, third angle always postical, calyptra 

 free, capsule on a long pedicel. Elaters 

 bispiral. Dum. Hep. Eur. 87. Spruce on 

 Cephalozia, p. 6. 



Spruce divides the genus into the following 

 subgenera, some of which are not represented in 

 Britain viz., Protocephalozia, Pteropsiella, Zoopszs, 

 Alobiella, Eu-cephalozia y Lembidium, Odontochisma, 

 Cephaloziella. 



SUB-GENUS. EU-CEPHALOZIA, Spruce. 



Cephalozia catenulata, Hub. 



Stems ascending, branches abbreviated, 

 leaves half embracing the stem, bifarious, 

 ovate, concave, acutely bifid ; perichaetial 

 leaves multifarious, 2-3-fid. Perianth longitu- 

 dinally plicate, mouth gaping, ciliate. 



Jungermannia catenulata, Hub. Hep. Germ. 

 p. 169 ; Gott. and Rabh. Exs. No. 433, 496; 

 Carr. and Pears. Exs. No. 115, 116, 250; 

 Carr. Irish Crypt, t. xi., f. 2 ; Cooke fig. 94. 

 Cephalozia catenulata, Lindb. Linn. Journ. XIIL, 

 p. 191 ; Dumort. Hep. Eur. 92. Jungermannia 

 reclusa, Tayl. Trans. Bot. Soc. Edin. II., 44 ; 



