Moore — On Irish Sepaticce. 647 



2. Jungermannia {A.) cremdata, Smith (Dumort.). Stems prostrate, 



branched. Leaves orbicular, bordered with large marginal cells. 



Colesule obovate, compressed, angled, mouth contracted, toothed. 

 Jungermannia crenulata, Sm. Engl. Bot. t. 1463 ; Hook. Brit. Jung. 



t. 37 ; Lindenb. Synop. Hepat. p. 66 ; Gr. L. et N. Synop. Hepat. 



p. 90 ; Taylor, Fl. Hib. 2, p. 58. Aplozia crenulata, Dumort. 



Hepat. Europ. p. 57 (1874). 



Eab. On moist clay banks in woods, and on heaths. Not unfrequent 

 through Ireland. Kelly's Glen, Dublin; side of the river, Seven 

 Churches, Wicklow ; Connemara ; Eoss Bay, Kerry, Dr. Car- 

 riiigton. 



Var. p. gracillima, Jungermannia gracillima, Sm. Engl. Bot. t. 2238 ; 

 Hook. Brit. Jung., at descript. n. 37. J. genthiana, Hiiben. Hepat. 

 Germ. p. 107. Aplozia gracillima, Dumort. Hepat. Europ. p. 57. 

 This variety, which is described and held as a species by some authors, 

 gradually approaches the typical form of the plant in some of its 

 states. It is, however, usually of smaller size, with the leaves 

 more distantly placed on the stem, and more amplexicaul at their 

 base. It occurs in similar places as that of the larger state of the 

 plant, but at Westaston, Co. Wicklow, the var. ^8. is abundant, 

 and none of the true A. crenulata grows with it. 



•3. Jungerman7iia{A.)puniila{yi[\ih..),J)vi'aiOTt. Stems ascending, short, 

 sub-simple. Leaves oblong-elliptic, concave. Colesule terminal, 

 fusiform, plicate, dentate, ciliate at the mouth. 



-Jungermannia pumila. Wither, Bot. An., ed. 3, p. 866; Hook. Brit. 

 Jung. t. 17 ; Sm. Engl. Bot. t. 2230; Tayl. Fl. Hib. 2, p. 58. 

 Aplozia pumila, Dumort. Hepat. Europ. p. 59. 



Hab. On rocks at the sides of streams and rivers, not rare. Dr. Taylor. 

 Glen near the Hunting Tower, Cromaglaun, Dr. Carrington. 

 Connor'Hill and glen at Brandon, Kerry ; Lough Bray, Co. Wick- 

 low ; Glenad, Co. Leitrim. 



4. Jungermannia (A.) cordifolia (Hook.), Dumort. Stems erect, 

 branching. Leaves incumbent, cordate, concave, amplexicaul. 

 Fruit terminal and axillary. Colesule plicate, mouth contracted, 

 denticulate. Antheridia in the axils of perigonial leaves, spher- 

 ical, reticulated. 



■Jungermannia cordifolia, Hook. Brit. Jung. t. 32; Engl. Bot. t. 2590; 

 Lindenb. Synop. Hepat. p. 72; G. L. et IST. Synop. Hepat., p. 93 ; 

 Tayl. Fl. Hib. 2, p. 58 ; Rabenhor. Hepat. Europ. exsic. nos. 

 271-344. Aplozia cordifolia, Dumort. Hepat. Europ. p. 59. 



Hab. Moist banks, and on the rocky bottoms of rivers and streams. 

 Mangerton, Co. Kerry, in the stream from the Punch Bowl, Dr. 

 Taylor. River which flows down to Cushindun, Co. Antrim, 

 three-quarters of a mile above the village, 1836. Coomashana 

 lake, Kei'ry, Dr. Carrington. Brandon, 1864. Maghanabo glen, 

 Kerry, 1875, D. Macardle. This distinct and well-marked species 

 is rather rare in Ireland. 



