376 BEPATICM 



cells larger and darker than the inner ; radiculose, rootlets long, 

 white or purplish, thick. Leaves spreading, suberect or erect, 

 closely or loosely imbricate, cordate, subrotund or ovate, 

 emarginate to about ^th, sinus acute or obtusate, segments broad, 

 acute or obtuse ; texture firm or lax ; cells smallish, roundish, 

 walls firm, angles thickened, no trigones, marginal cells smaller, 

 quadrate. No stipules. Bracts larger than the leaves, subrotund, 

 emarginate to about ^th, segments and sinus acute or obtuse. 

 Perianth usually smaller than the innermost bracts, adnate to 

 them for about half its height, mouth 4, 5-lobate. Capsule 

 spherical, pedicel short, spores brown, elaters bispiral. 



Androecia terminal, 2-4 pairs of bracts, which are closely 

 imbricate, ventricose at the base, somewhat similar to stem leaves, 

 enclosing 3, 4, large, oval antheridia, with long stipes (10-24 cells 

 long). 



Fruits March, April, May. 



Dimensions. — Stems |- to 3 inches long, diam. -1 mm. to 

 •4 mm., with leaves 1' mm. to I'S mm. wide; leaves 75 mm. x 

 75 mm., segments 2 mm., 75 mm. x -6 mm., seg. "2 mm., 9 

 mm. X "8 mm., seg. '2 mm., 1* mm. x l" mm., seg. '2 mm., 175 

 X 2* mm., seg. '2 mm. ; cells -03 mm., '025 mm., '025 mm. x 

 "02 mm.; bracts 1"5 mm. x 1*5 mm., seg. "3 mm.; perianth 1-5 

 mm. long; antheridia '225 mm. x '15 mm., -2 mm. x -125 mm.; 

 stipe '15 mm. long. 



Hab. — Grows on rocks or at the base of stone walls, from the 

 plains to alpine regions, most frequently in or by the side of 

 subalpine rivulets. 1, 3, 7, 10 to 17. I. 



Found on the Continent and in North America. 



Var. robusta Glyder Vawr, IF. H. P. 



Var. saccata ( ?) Killin, Perthshire, G. A. Holt. 



Obs. — A very variable species in size, colour, and shape of 

 leaves ; several varieties have been named by Nees and other 

 authorities, and some have been esteemed species by Lindberg and 

 others. Two of the most remarkable are var. robusta (Marsupella 

 robust a, Lindb.) and one which I believe is var. saccata of 

 Nees ; the former is distinguished by its large size, firm texture 



