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 

 Ccphalozia, p. 6. 



Spruce divides the genus into the following 

 subgenera, some of which are not represented in 

 Britain — viz., Protocephalozia, Pteropsiella, Zoopsis, 

 Alobiella, Eu-cephalozia, Lcmbidiinn, Odontochisma, 

 ( ephaloziella. 



Sub-Genus. EU-CEPHALOZIA, Spruce. 



Cephalozia catenulata, Hub. 



Stems ascending, branches abbreviated, 

 leaves half embracing the stem, bifarious, 

 ovate, concave, acutely bifid ; perichsetial 

 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. XIII., 

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

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



