350 HEPATIC^. 



obtuse, incurved, sinus narrow, rounded, cells small, subquadrate, 

 4-, 5-, and G-sided, walls thick, angles thickened, no trigones. 

 Stipules usually bipartite almost to the base, rarely simple, seg- 

 ments subulate, lanceolate, divergent, entire, sometimes unidentate 

 at base. Bracts larger than the leaves, subquadrate, quadrifid, some- 

 times unidentate near base, segments widely subulate, acuminate or 

 acute, margin entire ; bracteole free, narrowly subquadrate, dentate- 

 spinose near base, bifid to about the third, segments widely subulate, 

 acuminate, entire, sinus narrow. Perianth terminal, projecting 

 beyond the bracts, oblong-oval or oblong-ovate, terete, upper half 

 plicate, mouth slightly constricted, laciniate, dentate or denticulate. 

 Pistillidia about 12. 



Male stems more slender, leaves more erect, perigonial bracts 

 often trifid, segments incurved, terminal or in the middle of the 

 stem, antheridia oval. 



Dimensions. — Stems 1 to 1|- inches long, -3 mm. diam.,175 mm. 

 wide with the leaves ; leaves '9 mm. high x 1* mm. broad, segments 

 •45 mm., '9 mm. x '9 mm., seg. "3 mm,, 75 mm. x '85 mm., seg. 

 "35 mm., "7 mm. x "6 mm., seg. '25 mm. ; cells -0175 mm., "02 mm., 

 •0225 mm. ; stipules "4 mm. long x '275 mm. broad at base, seg- 

 ments "35 mm., "35 mm. x -175 mm., seg. '3 mm., "35 mm. 

 X '125 mm., ses^. '3 mm. ; bracts 1*25 mm. x 1" mm., sesrments 

 •4 mm., '5 mm., *6 mm. ; bracteole 1"25 mm. x 65 mm., seg. 

 •55 mm. ; perianth 2 '5 mm. long x 1-25 mm. broad ; lacinise at 

 mouth of perianth "1 mm. long; pistillidia "2 mm. long x ■05 mm. 

 broad. 



Hab. — Grows on rocks and heaths in alpine localities. Very rare. 



Scotch Alps, Bruminoiid (Herb. Taylor). 



Found in alpine districts on the Continent and in North 

 America. 



Obs. — This extremely rare alpine British species is abundantly 

 distinct from any other by its colour, shape of leaves, bracts and 

 stipules. 



Description of Plate CLI. — Fig. 1. Plants natural size. 



2. Portion of stem x 16 (Scotland, Druinmond, Hb. Taylor). 



3. Portion of male stem x 16 (ditto). 4-6. Leaves x 24 



