242 HEPATICJ^. 



concave, slightly undulate, subaciniciform or oblong, obtuse or 

 sometimes sliglitly apiculate ; cells small, quadrate, guttulate, near 

 base in postical lobe elongate, cell-walls thick, no trigones. Bracts 

 somewhat similar to the leaves, but larger. Perianth projecting 

 from about ^ to ^ beyond the bracts, terminal, obovate or 

 oblong-ovate, upper portion 5 -plicate, mouth contracted, laciniate, 

 irregularly dentate or denticulate. Capsule oval ; spores reddish- 

 brown ; elaters bispiral, same colour. Antheridia situated in the 

 base of the bracts or on branches proceeding from base of perianth, 

 small, one or two in each bract. 



Fruits April, May. 



Dimensions. — Stems about \ inch long, diameter '15 mm. to 

 •175 mm. ; upper leaves, antical lobe "6 mm. x '4 mm., postical 

 lobe 1* mm. x "5 mm., antical '5 mm. x -3 mm,, postical "9 mm. 

 X "4 mm. ; lower leaves, antical lobe '4 mm. x '25 mm., postical 

 7 mm. x -3 mm. ; cells -015 mm. x '02 mm., '025 mm., basal cells 

 •05 mm. X '02 mm., ^04 mm. x ^02 mm., ^03 mm. x '02 mm.; 

 bracts, antical lobe 1' mm. x ^6 mm., postical 1*3 mm. x '7 mm. ; 

 perianth 2^ mm.xl* mm.; capsule '9 mm. x '6 mm.; spores 

 •01 mm. diam. ; elaters "1 mm. x •Ol mm. ; perigonial bracts, 

 antical lobe ^5 mm. x '4 mm., postical ^9 mm. x "5 mm. 



Hab. — Grows on shady banks and in old quarries, in company 

 with Scapania rosacea and Jung, bicreuata. Rare. 



7. Tyn-y-Groes, Merionethshire, G. A. Holt, May 1885. 

 9. Delamere, Cheshire, Wilson 8f Carrington. 10, 11. Near 

 Heddon on the Wall, Northumberland, Mr. TIiornhilL 15. Gate- 

 side, Strachan, Perthshire, /. Sim, June 1879. 16. Glen Finnan, 

 Dr. Carringtou, July 1876. Moidart, West Inverness, /S'. M. Mac- 

 vicar ^ W. H. 7^., 1899. 



I. Near Ban try, Co. Cork, Miss Hufcliins. Near Dunkerron, 

 Co. Kerry, Br. Taylor ; Dunscome's Wood, near Cork, W. 

 Wilson. 



Generally distributed on the Continent. North America. 



Obs. — Although Dr. Hooker had an impression that the species 

 was dioicous, it is truly paroicous or monoicous, and this character, 

 along with its small size, distinguishes it from any form of Diplo- 



