94 HANDI'.OOK OF I'.RTTISII HF.PATIC/E. 



succuhoiis, horizontal, never deflexcd, 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 — Duni. Hep. Eur. 87. Spruce ou 

 Cephalozia^ p. 6. 



Spruce divides the genus into the following 

 su1:)gcncra, some of which arc not represented in 

 I^ritain — viz., ProtocLpJialozia, Ptcropsiclla, Zoopsis, 

 Alobiclla, Eu-ccphalozia, Lcmhidiuin, OdontocJiisma, 

 Ccphaloziclla, 



Sup-Genus. EU-CEPHALOZIA, Sl^rucc, 



Ceplialozia catenulata, Hith. 



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. 



Jungcrmannin cateuulata, 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. 

 Ceplialozia catenulata, Lindb. Linn. Journ. XI II., 

 p. T91 ; Dumort. Hep. Eur. 0^2. Jungcnuauuia 

 reclusa, Tayl. Trans. P)ot. Soc. Edin. II., 44 ; 



