118 HEFATIO/E. 



slightly thickened, no trigones. Stipules large, orbicular or 

 subrotund, or roundish-subquadrate, concave, to nearly the -J 

 quadrifid, segments acutate. Perianth on short postical branches, 

 bracts several pairs, innermost largest, oval-orbicular, apex with 4 

 or 5 small teeth ; bracteole orbicular, quadri-denticulate ; sub- 

 bracteole ovate, quadri-dentate. Perianth projecting f beyond 

 the bracts, subulate, cylindrical, upper half plicate, mouth con- 

 tracted. Androecia on short postical catkins, often 3 or 4 on a 

 stem ; perigonial bracts closely imbricate, turgid, bitid; perigonial 

 bracteole oval, bidentate, texture as with the perigonial bracts 

 much more delicate than the leaves, cells larger with thinner walls. 

 Antheridia solitar}^ large, roundish-oval, shortly stipitate. 



Dimensions. — Stems 1 to \\ inch long, diameter "2 mm., with 

 leaves 1' mm. wide; leaves 1* mm. x •S5 mm., segments '4 mm., 

 •9 mm. X "9 mm., seg. '3 mm. ; cells '02 mm. x '025 mm., '02 mm. 

 X '02 mm., '03 mm. x "025 mm., -03 mm. x '03 mm., '035 mm. x 

 '02 mm. ; stipules "55 mm. x "55 mm., segments "2 mm., "5 mm. x 

 •45 mm., seg. '2 mm., "5 mm. x '6 mm., seg. "2 mm., "5 mm. x '5 

 mm., seg. "2 mm.; bracts 1"1 mm. x '8 mm., teeth "15 mm.; 

 bracteole '8 mm. x "6 mm., teeth "1 mm. ; sub-bracteole "6 mm. x 

 •4 mm., teeth "1 mm. ; perianth 4* mm. x '8 mm. ; perigonial 

 bract "5 mm, x '5 mm., seg. "15 mm. ; perigonial bracteole '25 

 mm. X '175 mm., seg. '075 mm. ; antheridium "2 mm. x "175 mm. 



Hab. — Grrowing in large dense patches on exposed or shaded 

 banks, rocks and trees. Rare. 



1. Cam Galva, Cornwall, //'. Cnrnoic. 9. Helsby Crag, 

 Cheshire, W. WiUon. Clougha, Lancashire, G. Stabler, July 

 1881. 10. On gritstone boulders, Idle Woods, Dr. Carrivg- 

 ton, 1857. 12. Borrowdale, Cumberland, Dr. Carriugton and 

 W. 11. P., April 1S84. 16. Moidart, West Inverness, S. M. 

 Macvicar, 1898, W. II. P., 1899. South of Ireland, more 

 or less abundant, Jliss Hut chins, Br. Taylor, Dr. Spruce, and 

 others. 



Extremely rare on the Continent, Germany, Prof. A. Braiin ; 

 France, near Cherbourg, Mons. Thuret. 



Found in the West Indies and South America. 



