Moore — On Irish IIepatic(s. 643 



!N'ees, Europ. Lebei*. 1, p. 237 ; G. L. et IS. Synop. Hepat. 

 p. 76 ; Gottsche et Rabenhor. Hepat. Eur. exsic. n. 12-302. 

 Diplophyllum obtusifolium, Dum. Rev. Jung. p. 16, et Hepat. 

 Europ. p. 50 ; Cogn. Hepat. Belg. p. 24. 

 Hab. On moist clay banks. Near Bantry, Co. Cork, Miss Hutcbins 

 (1812)? jSTear Dunkerron, Co. Kerry, Dr. Taylor. Dunscome's 

 Wood, near Cork, W. Wilson, Esq. (1829). Very rare in Ire- 

 land. The localities quoted are the only places where it has 

 hitherto been observed, 



Plagiochila, Dumorticr. 



Jungermannia, h. Nov. PI. Gen. p. 7, tab. 5, fig. 1 (1729); Linn. 

 Sp. PL, 1 ed., 2, p. 1131 (1753); Hook. Brit. JTung. (1816). 

 Candollea, sect. A., Raddi, in Att. Soc. Modena, 18, p. 22 (1818). 

 MartineUia, sect, h, in Gray's Nat. Arr. Br. PI. 1, p. 692 (1821). 

 Radula, Dumort. Comm. Bot. p. 112(1823). Plagiochila, Dum. 

 Recueil, 1, p. 14 (1835) ; Lindenb. 8p. Hep. fasc. 1, 1-5 (1839); 

 G. L. et N. Synop. Hep. p. 22 (1844). 



Involueral bracts two, larger than the cauline leaves. Colesule com- 

 pressed at the mouth, ciliate-dentate. Antheridia in the angles 

 of perigonial leaves. Inflorescence autoecious or dioecious. 



1. Plagiochila asplenioides (Linn.), Dumort. Stems ascending. Leaves 

 subimbricatcd, obovate-rotund, ciliate-dentate, slightly recurved 

 at apex. Colesule longer than the involueral bracts, compressed, 

 oblique, mouth truncate or ciliated. 



Jungermannia asplenioides, Linn. Sp. PI. p. 1597 ; Engl. Bot. 1061 ; 

 Hook. Brit. Jung. t. 13 ; Nees, Europ. Leber. 1, p. 161. Pla- 

 giochila asplenioides, Dumort. Rev. Jung. p. 14; G. L. et N. 

 Synop. Hep. p. 49 ; Gottsche and Rabenhor. Hep. Eur. exsic. 

 nos. 271-320; Carring. Brit. Hepat. p. 55, pi. 4, fig. 12; Cooke, 

 Brit. Hepat. p. 5, fig. 37 ; Dumort. Hep. Europ. p. 43. 



Hab. Banks among moss, and in woods. This, one of the largest and 

 finest of the British species, is common all over Ireland. In the 

 moist shady woods at Cromaglaun, it grows to a very large size, 

 where the stems not unfrequently attain from 8 to 10 inches 

 long. 



Var. /3. minor (Fluff. Dillenii), Taylor, in Hook. Journal of Botany, p. 

 260 ; Trans. Bot. Soc. Edinb., 2, p. 16. Dumortier enumerates and 

 describes this as a distinct species in Hepat. Europ., p. 43. It 

 grows plentifully in the Killarney woods. 



P^ar. 8. devexa, Ross Bay and Dingle Bay, Kerry, Dr. Carrington. 

 :2. Plagiochila spinulosa (Jiick^.), J)uva.oxt. Stems creeping, branches 

 ascending. Leaves ovate, recurved, oblique, spreading, wedge- 

 shaped, dentate-spinulose on ventral aspect and apex, entire on 

 dorsal margin. Eructification lateral. Colesule roundish, com- 

 pressed, the mouth truncate-ciliated. 



