172 HEPATIC^. 



emarginate, more or less distinctly margined, margin often 

 brownish ; texture firm, epidermis smooth ; cells small to medium 

 size, subopaque, roundish-quadrate or roundish-oblong-quadrate, 

 walls thick, angles large, thickened, trigones rarely present, 

 marginal cells usually quadrate with thicker walls. Stipules none 

 or rarely present at the apex of stem or branches, very minute, 

 ovate, entire or bifid. Inflorescence ? postical ; sub-bracts small, 

 oval, bidentate, concave ; sub-bracteoles oblong, entire ; bracts 

 somewhat larger than the leaves and often very much more pellucid, 

 somewhat recurved, cuneate-oblong, almost to the middle bifid, 

 with 1, 2 or 3 smaller segments, which are apiculate or acute 

 dentate, rarely entire ; bracteole somewhat similar, but smaller. 

 Perianth 3 to 6 times longer than the leaves, subulate-fusiform, 

 cylindrical below, trigonous above, hyaline, near base 3 to 4 cells 

 thick, upper portion composed of one layer of cells, mouth small 

 through the folds, laciniate-ciliate, cilia very narrow, 2 cells long. 

 Calyptra obovate, 1 to 2 cells thick near the base. Capsule 

 spherical, dark brown, valves dividing to the base, thin texture. 

 Spores small, smooth, dark reddish-brown. Elaters bispiral, rather 

 broader than the spores, of the same colour. Andrcecia postical 

 amentiform, catkins minute ; perigonial bracts about 8 pairs, 

 closely imbricate, concave-complicate, oval, bidentate, segments 

 acute; bracteole oblong, entire or slightly emarginate; antheridia 

 single, oval, stipitate. 

 Fruits April, May. 



Dimensions. — Stems 1 to 3 inches long, "15 mm. diameter; 

 leaves 75 mm. x 'G mm., 7 x "G mm., 7 mm. x "8 mm., 7 mm. 



X 7 mm., 'GS mm. x "Go mm., 75 mm. x 75 mm. ; cells '035 mm. 



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



x '03 mm., -03 mm. x 02 mm. ; sub-bracts '5 mm. x '4 mm. 

 sinus, '1 mm., "5 x '35 mm., "3 mm. x '25 mm. ; sub-bracteoles 

 •3 mm. X "2 mm. ; bracts 1'25 mm. x 75 mm. segments, '4 mm., 

 'G mm., I'l mm. x Qb mm. segments, '45 mm. ; bracteole 75 mm. 



x '5 mm. segments, "25 mm. ; perianth 4" mm. x 75 mm., 2"G mm. 



X "G mm. ; teeth at the mouth '075 mm. ; calyptra 1* mm. x "Smm.; 

 pistillidia '15 mm. x "025 mm. ; capsule "G mm. x "55 mm.; valves 



