HANDBOOK OF BRITISH HEPATIC^. 1 17 



obliquely truncate, hence split. Capsule four- 

 valved, coriaceous, naked ; elaters geminate, 

 naked, deciduous. Mitt. Hook. N. Zeal. 518. 

 Dum. p. 46. 



" Adelanthus is well distinguished by its habit of 

 Plagiochila, by its decurvo-secund and usually 

 sharply toothed leaves, and by its half inferior 

 calyptra, strewn with sterile pistillidia, although the 

 cladogenous perichaetia, and the 3-5 angled 

 perianth, with the third angle postical, whenever the 

 angles are reduced to three, prove its affinity to 

 Cep/talozia, especially to the sub-genus Odonto- 

 chisina" Spruce Cephalozia, p. 17. 



Adelanthus deeipiens, Hook., Mitt. 



Stem flexuose, whip-like, leaves inflexed on 

 the dorsal margin, the inferior ovate, and quite 

 entire, superior rounded ovate, mucronate. 



Jungermannia decipiens, Hook. Br. Jung, 

 t. 50, Eng. Bot. t. 2566. Plagiochila decipiens, 

 Dum. Rev. p. 15; Gott. and Rabh. Exs. 213; 

 Cooke Hep. f. 31. Adelanthus decipiens, Mitt. 

 Linn. Journ. VII., 244 ; Gott. and Rab. Ex. 

 No. 474 ; Carr. and Pears. Exs. No. 98, 

 99 ; Spruce Hep. Amaz. p. 404. 



On rocks. (Ireland.) 



Growing in small dense tufts. Root large and 

 creeping, stems erect, thread-like flexuose, f to i 

 inch long, simple or rarely divided at the base, 

 sometimes two or more arise from the creeping 



