226 HANDBOOK OF BRITISH HEPATIC^. 



stem, somewhat smaller and more distant near 

 the base ; round or subquadrate, sometimes round- 

 ish-ovate, acutely emarginate, sinus one-third to 

 one-fourth ; lobes equal, divergent. Leaves loosely 

 imbricate, half embracing, very concave, inflexed 

 at the base. Olive-brown, lurid-brown, or pale 

 olive, smooth. Dioicous. Fertile shoots thickened 

 upwards, shortened ; involucral leaves two or three 

 pairs, suddenly enlarged, broadly ovate, lobes 

 rather obtuse, sinus acute. Involucre conspicuous, 

 ovate, of two convolute leaves, connate half their 

 length ; lobes acute, at first connivent, then erect. 

 Perianth adnate with and hidden by the outer invo- 

 lucral bracts, apex at first entire, afterwards split. 

 Calyptra obovate. Capsule very minute, pale 

 reddish-brown, valves ovate, spores brown 15/1. 

 diam. Elaters bispiral, flexuous. This species is 

 rarely met with in fruit. (Plate 5, fig. 65?) 



Nardia adusta, N., Carr. 



Paroicous. Shoots very minute, clavate, 

 terete ; leaves few, vertically imbricate, ao 

 cresent, subcomplicate, round or broadly 

 ovate, from a ventricose sheathing base, 

 acutely bilobed, the sinus angular; cells 

 large, hyaline ; involucre ovate, conspicuous ; 

 segments erect, acute, lower half adnate. 



Gymnomitrium adustum, Nees Leberm. I., 

 120; Cooke Hep. f. 15. Acolia brevissima, 

 Dum. Syll. p. 76. Sarcoscyphus adnstus, Spr. 

 Hep. Pyr. p. 196. Nardia adusta, Carr. Brit. 



