404 BRTACE^. [Rypnum, 



obtuse or subacute, deeply concave ; costa double, short, 

 obsolete ; areolation very narrow, enlarged, quadrate and hya- 

 line at the decurrent angles, concave on the uj^per face ; peri- 

 chaetial leaves deeply sulcate, narrowly bicostate, gradually 

 short-acuminate : capsule long-pedicellate, erect at base, hori- 

 zontally incurved, oblong, large, reddish brown ; operculum 

 convex-conical, apiculate ; teeth orange, hyaline-margin ate, ser- 

 rate at the apex ; cilia three, stout, a little shorter than the nar- 

 rowly cleft segments ; annulus broad, triple, revoluble, per- 

 sistent. — Spec. PI. 1129 ; Bryol. Eur. t. 619. Stereodon cuspi- 

 datus, Brid. Acrodudium cuspidatu?n, Lindb. Muse. Scand. 39. 

 Hab. Swamps, wet meadows, grassy ditches; not common. 



177. H. Richardsoni. Monoecious: cespitose, the branches 

 irregularly pinnate, cuspidate at the apex : leaves spreading, 

 broadly ovate, obtuse, concave ; cells long and narrow, promi- 

 nent at the apex, the alar loose, ventricose, pale ; perichastial 

 leaves oval, acute, nerved to the middle, imbricate : capsule 

 long-pedicellate, cylindrical, arcuate, horizontal ; peristome nor- 

 mal. — Stereodon liichard&oni^ Mitt., Journ. Linn. Soc. viii. 42. 

 Amblystegium Hichardsoni, Lindb. Muse. Scand. 34. 



Hab. British America ( Elc.hardson) ; coast of Greenland {Ingle field). 



The autlior remarks tliat in its general appearance and yellowisli brown 

 color the species is closely similar to //. cusjndatuni, and intermediate 

 between it and H. cordifolium. 



178. H. Schreberi, Willd. Dioecious : tufts high, pale, 

 olive or grayish green ; stems rigid, woody, dark red, branch- 

 ing and pinnately-ramulose ; branches and branchlets obtuse at 

 the apex : leaves close, loosely imbricate, broadly ovate, ob- 

 long, obtuse or obtusely pointed, slightly sulcate ; costa double, 

 short ; borders recurved at base, incurved at the apex ; areola- 

 tion very narrow, solid, quadrate, orange at the base and at the 

 decurrent excavate angles ; inner perichajtial leaves sheathing, 

 erect, short-acuminate, ecostate, not plicate : capsule incurved, 

 oblong, fuscous ; pedicel purple, long, twisted above ; oper- 

 culum conical-apiculate, reddish ; teeth long, lamellate on the 

 inside, cristate ; segments split nearly the whole length ; cilia 

 three, slightly shorter; annulus none. — Prodr. FI. Berol. 325; 

 Bryol. Eur. t. 620. Stereodon Schreberi, Mitt. 1. c. Ilylocomium 

 Schreberi, DeNot. Briol. Ital. 92, and H. parietimim, Lindb. 



Hab. On shaded ground, hills and mountains; common. 



