M'Ardle & Lett— Om EepaticcB^ Killarney, 1897. 321 



Section V. — Deepanolejeun'ea. (Spruce, Gen.) 



FoUoles small, triangularly lipartite to one-third of their length, 

 segments divergent ivith sululate points. 



13. Lejeunea hamatifolia, Hook, Dumort. Jungermania hamatifolia, 

 Hook, Brit. Jung. tab. 51. On the trunks of trees and among 

 the larger hepatics very scarce. 



Section VI. — Cololejeunea (Spruce, Gen.) 

 Foliole absent. 



14. Lejeunea minutissima, Smith, Eng. Bot., vol. 23, fig. 1633. On 



the bark of trees and on the fronds of Metzgeria, &c. 



15. Lejeunea microscopica, Taylor. Jangermania microscopica, Taylor 



in Fl. Hib. 2, p. 59, Hook. Journal of Botany, 4, p. 97, t. 20. 

 Epiphytic on the larger hepatics and mosses. 



Teibe Jungeemaote^. 

 Sub-Teibe Eaditle^. 



16. Radula complanata, L. Dum. Jwigermania compla?iata, Hook, 



Brit. Jung. t. 81, On the trunks of trees, and on rocks, 

 common. 



17. Radula voluta, Taylor in G. L. et N. Synop. Hep., p. 253, 1845. 



Radula xalapensis, 'S. M. in Ann. Sc. Nat. 2, ser. 5, p. 56. 

 Lindberg Hepat, in Hibemia lectse, 1874. On rocks in the 

 stream very fine, forming large yellow patches, plentiful. 

 1^. Radula Carringtoni, Jack in Flora, p. 385, 1881. Radula ac[ui- 

 legia, Taylor, var. major. Carrington in Trans. Bot. Soc. 

 Edinb. vii., p. 455, 1863. Lindberg's Hepaticse in Hibernia 

 lectse, 1874. On damp rocks with Metzgeria conjugata and 

 Lejeunea Mackaii. 



(Plate YIII.) 



This fine species which we had not seen before grew in some 

 quantity amongst the two above-named plants, and also on the 

 moist rocks to which it adhered as closely as the Lejeunea. 



The male plant was plentiful, bearing copious amentse, and 



