M'Ardle & Lett — On Eepaticce, EiUarney, 1897. 325 



leaves nearly equal ; dorsal roundish., blunt or with a small 

 point (apiculate) slightly reflexed ; ventral (lobule) one-half 

 the size of the lobe, roundish ovate, concave, crossing the stem. 

 Texture thin but firm, somewhat pellucid, little altered when 

 dry. Cells minute, arranged in concentric circles, especially 

 towards the base of the leaf. Gemmae mostly the colour of the 

 leaves, sometimes dark reddish, and are then very conspicuous, 

 sphserical, grouped at apex of stem and on the leaf margins, 

 copious. 



Dioecious. Bracts two, with two nearly equal -toothed lobes. 

 Perianth immersed for one-half its length, wedge-shaped, 

 ovate compressed in the bracts ; mouth truncate, irregularly 

 cut and fringed with long close decurved teeth. Capsule, small 

 oval, on a short stalk. Spores, minute sphserical, reddish. 



25. Scapc0iia nemorosa, Linn, Dumort. Jungermania nemorosa, Linn. 



Sp. ed. 3, p. 1598. Hook, Brit. Jung., tab. 28 in part. On 

 damp rocks and banks, 



26. Scapania as])era^ Miill. Scapania csqtiiloha, var. dentata, Gottcb. 



Scapania aspera. Pearson in Journal of Bot. Deer., 1892, tab. 

 329. M'Ardle, Musci and Hepaticse of the County Cavan.^ 

 On rocks and among mosses on damp banks. 



27. Scapania undtdata, Linn, Dill. Jungermania imdidata, Linn. Sp. 



PL 1598. Hook, Brit. Junger., tab. 22. On wet rocks and 

 moist banks, common. 



28. Diplophyllum albicans^ Linn. Dumort. Jungermania albicans, 



Hook, Brit. Jung., t. 23. On rocks and banks about the roots 

 of trees, common, 



SUB-TEIBE EpIGONEANTHE.^. 



29. Lophocolea bidentata, Linn., Dumort. Jungermania bidentata, Sm. 



Eng. Bot., t. 606. On damp banks and on decayed wood, 

 common. 



30. Lopliocolea spicata, Taylor in G. L. et IN". Synop. Hepat., p. 167. 



Carr and Pearson Exic, ISTo. 263. On decayed wood and on 

 damp rocks among Hypnum, fertile. 



31. Plagiocliila asplenioides, Linn., Dumort. Jungermania asplenioides, 



Linn. Sp. PL, p. 1597. Hook, Brit Jung., t. 13. On banks 

 and on damp rocks, common. 



1 Proc. R. I. Academy, Srd Series, vol. iv., p. 612, PI. xsi., 1898. 



