626 Proceedings of the Royal Irish Academy. 



yarious parts of Ireland what I considered to be the latter, but 

 when my specimens were examined by Drs. Carrington and 

 Lindberg, they referred all of them to C. divaricata, Engl. Bot. 

 Dr. Taylor states it to be common in Ireland. The presence or 

 absence of amphigastria do not appear to be decisive distinguishing 

 characters, as Mr. Spruce states in his remarks on Jung, divari- 

 cata (in Hepat. Pyrenees, Trans. Bot. See. Edinb., 3, p. 207), 

 that some of his specimens have stipules, and some are altogether 

 without them. 



5. Cep]ialo%iahiciispidata{ljva.Ti.),'D\\moxi. Autoecious. Stem creeping, 



branched. Leaves incumbent, lax, subquadrate, bifid, segments 

 long, acute. Involucral bracts 2-3 cleft, imbricated. Colesule 

 radical and terminal on lateral branches, plicate and toothed at 

 the mouth. 



Jungermannia bicuspidata, Linn. Sp. PI. 158 ; Hook. Brit. Jung. t. 11 ; 



Engl. Bot. 2239; I^ees, Europ. Leber. 2, p. 351; De Notaris, 



Prim. Hepat. Ital. p. 27; G. L. et IST. Synop. Hepat., p. 138. 



Cephalozia bicuspidata, Dumort. Rev. Jung., p. 18 ; Hep. Eur. p. 



91. Trigonanthus bicuspidatus, Hartm. Skand. El. 10 ed., p. 143. 

 Var. a. major, Nephin Mountain, Mayo. 

 Var. yS. rigidula, Cromagioun, Kerry, Dr. Carrington. 



Hab. On heaths and banks. A very common species in many parts of 

 Ireland. 



6. Cephalo%ia eurvifolia (Dickson), Dumort. Autoecious. Stems pro- 



cumbent. Leaves semi-verticillate, concave, deeply bifid, segments 

 long, setaceous at the points, and much incurved. Colesule on 

 lateral branches, oblong, subplicate, contracted, and toothed. 



Jungermannia eurvifolia, Dicks. PI. Crypt. 2, p. 15, t. 3, f . 7 ; Hook. 

 Brit. Jung. t. 16 ; Engl. Bot. t. 1304 (not good); Carring. in 

 Trans. Bot. Soc. Edinb., vol. 7, pl. 11, fig. 4; Lindenb. Synop. 

 Hep. p. 91 ; Taylor, in El. Hib. 2, p. 60 ; G. L. et I^. Synop. 

 Hepat. p. 142 ; Babenhor. Hep. Europ. exsic. n. 72, 217, &c. 

 Cephalozia eurvifolia, Dumort. Hepat. Europ., p. 93. 



Hab. On decaying trunks of trees ; also on moss-covered banks, among 

 mosses. Erequent about Killarney ; Connor Hill, Kerry ; Kyle- 

 more, Galway; Glenade, Leitrim. 



Var. (3. Baureri = Cephalozia Baueri, Lindberg. 



Hab. Cromagioun, and elsewhere in the Killarney district. 



7. Cephalozia connivens, Dicks. Stem procumbent, slightly branched. 



Leaves accumbent, suborbicular, concave, deeply bifid, segments 

 incurved, connivent. Colesule terminal, on lateral branches, 

 ovate, contracted and ciliated at the apex. 

 Jungermannia connivens, Dicks. PI. Crypt., fasc. 4, p. 19, tab. 2, fig. 15; 

 Hook. Brit. Jung. tab. 15 ; Engl. Bot., t. 2436 ; Tayl. in El. Hib., 

 p. 2, p. 60 ; De Not., Prim. Hep. Ital., p. 27. Blepharostoma con- 



