Hypnum.] BRYACE^. 401 



170. H. montanum, Wlls. Ms. Plants small, in wide 

 soft tumid tufts, redditih-brown within, yellowish green above ; 

 stem slender, jH'ostrate, mostly naked, with simple or fastigiately 

 ramulose erect branches : leaves variously curved, oftener sub- 

 falcate-secund, concave or complicate, broadly ovate, lanceolate- 

 acuminate above, decurrent at base, slightly serrulate all around ; 

 borders erect or reflexed ; costa short and double or none; areo- 

 lation narrow, fusiform, larger and oblong at the angles ; inner 

 perichaetial leaves erect, narrowly short-acuminate, sulcate-striate, 

 serrulate at the apex only: capsule oblong, erect, cernuous; 

 pedicel slender, subarcuate above ; operculum convex-conical, 

 mamillate ; teeth pale yellow, lamellate inside ; cilia two, as 

 long as the entire segments, nodose; annulus very broad. — 

 James, Proe. Philad. Acad. 1855, 4-47 ; Sulliv. Mosses of U. 

 States, 72, and Icon. Muse. 181, t. 113; Sulliv. & Lesq. Muse. 

 Bor.-Amer. Exsicc. n, 306. 



Hab. Moist rocky banks of rivulets ; White Mountains ( Oalces, James). 



171. H. eugyrium, Schimp. Tufts appressed, bright yel- 

 lowish green, soft ; stems short, branching and ramulose : leaves 

 close, multiform, those of the stems oblong-lanceolate and short- 

 acuminate, distichous, those of the branches and branchlets 

 flexuous-falcate, the upper and lower plano-concave, the lateral 

 subcomplicate, falcate-flexuous, long-lanceolate, diversely curved, 

 all serrulate at the apex only, marked at base by a short yellow 

 line instead of a costa; cells very narrow, vermicular, those of 

 the decurrent concave angles abruptly enlarged, rectangular, 

 with thick dark orange walls ; perichfetium long, whitish, its 

 outer leaves spreading and flexuous from the middle, the inner 

 erect, strict, long-lanceolate, erose-denticulate at the apex, sul- 

 cate: capsule cernuous, ovate-oblong, turgid, yellowish brown; 

 operculum highly convex-mammiform; teeth solid, yellow, linear, 

 deeply articulate above ; segments cleft betAveen the articula- 

 tions; cilia two or three, as long as the segments, nodose and 

 granulose ; annulus very broad, triple. — Syn. 639. JJmnobium 

 euf/i/rium^ Schimp. ; Bryol. Eur. t. 579. Amblystegium eugyrium., 

 Lindb. 



Hab. On rocks in mountain brooks, New York and New England. 

 * * Floioers dioecious. 



172. H. ochraceum, Turner, Ms. Widely cespitose ; tufts 

 soft, yellowish or ferruginous green, ochraceous within j steins 



