228 HEFATIC.'E. 



narrower than the centre ones and deep purple in colour, inner 

 hyaline 10-12 cells in diameter, all very small; procumbent or 

 somewhat erect. Leaves imbricate or approximate, horizontal to 

 patent-divergent, somewhat regular, unequally bilobed, margins 

 spinose-ciliate or denticulate, antical lobe about half the size of the 

 postical, nearly or not quite crossing the stem, convex, subquadrate, 

 acute ; postical lobe obovate or broadly oval, rotundate ; epidermis 

 smooth ; cells small, roundish-quadrate or roundish-oblong-quad- 

 rate, guttulate ; walls and angles thickened. Bracts much larger 

 than tlie leaves, unequally bilobed, antical lobe about ^ smaller 

 than the postical, oblong-quadrate, rotundate, obtuse, margin 

 spinose-ciliate or denticulate ; postical similar to the leaf lobe. 

 Perianth projecting f beyond the bracts, oblong, mouth wide, 

 distantly denticulate or shortly ciliate. Capsule dark reddish- 

 brown, thick texture. Spores smooth, pale reddish-brown. Elaters 

 reddish-brown, bispiral. Androecia terminal on stems ; perigonial 

 bracts 2, 3 pairs, unequally bilobed, antical lobe smaller than the 

 postical, ovate-orbicular ; postical obovate. Antheridia 3 in each 

 bract, very large, oval. 



Fruits April, May, June. 



Dimensions. — Stems i to |- inch long, "2 mm. diam., with 

 leaves 1*75 mm. wide; leaves, antical lobe '8 mm. x '4 mm., 

 postical I'l mm. x "7 mm,, antical '7 mm. x Q mm., postical 

 1*2 mm. X '7 mm., antical "6 mm. x '5 mm., postical 1"1 mm, x 

 '7 mm, ; cells '02 mm,, '02 mm. x '015 mm,, "02 mm, x '01 mm., 

 "02 mm, X "025 mm.; bract, antical lobe 1'5 mm x '9 mm., pos- 

 tical 2" mm, X 1"2 mm, ; perianth 4* mm, x 1*25 mm, ; pedicel 

 •2 mm. diam.; valves of capsule 1*25 mm, x '55 mm,; spores 

 •015 mm, ; elaters '08 mm, x '01 mm. ; perigonial bract, antical 

 lobe 1* mm. X "9 mm., postical 1'5 mm. x "9 ram.; antheridia 

 •24 mm. x "16 mm. 



Hab. — On shaded rocks, Littlebeck, Eskdale, Yorkshire, 

 M. B. Slater. 



Found on the Continent, Mont-Dore, France, E. Laiinj. 



Obs, — Mr, Slater collected this species many years ago, and 

 detected w^ith his usual acuteness the characters which separated 

 it from S. iiemorosa on the one hand and S. /imbrosa on the other. 



