372 BEYACE^. [Hypnum. 



convex on the upper side, constricted under the large orifice 

 when deoperculate and dry, turbinate, thin, dirty yellow ; pedi- 

 cel slender, 4 or 5 m.m. long ; teeth pale yellow, hyaline on the 

 borders ; cilia 1 or 2, as long as the segments ; annulus double, 

 persistent. — Muse. Bor.-Amer. Exsicc, n. 343 ; Sulliv, Mosses 

 of U. States, 78, and Icon. Muse. 195, t. 120. 



Hab. Moist rocks in shaded ravines, in the Central States, Northern 

 New Jersey, Pennsylvania, Ohio, Illinois; rare. 



116. H. Sprucei,Bruch Ms. Dioecious: plants very small, 

 loosely cesintose ; stems capillaiy, those of the fertile tufts 

 more compact and ascending, with branches and branchlets 

 erect, those of the loose sterile tufts very long and creeping : 

 leaves loose, spreading, oval or oblong, lanceolate, entire, nerve- 

 less, loosely areolate, green ; pericliEetial leaves similar, serrate 

 at the apex; antheridia without pai-aphyses: capsule minute, 

 erect or slightly incurved, oval and obovate, with a distinct in- 

 flated neck and enlarged orifice when dry ; operculum mamil- 

 late, obtuse ; teeth pale ; cilia none ; annulus very narrow, sim- 

 ple. — Muell. Syn. ii. 415. JI. confervoides, Drumm. Muse. 

 Amer. n. 190. Amhlystegvum iSprucei^ Bruch & Schimp. 

 Bryol. Eur. t. 561. 



Hab. Santa Fe, New Mexico (Fendler) ; Colorado (E. Hall, Wolf & 

 Bothroclc) ; British America (Drummond). 



117. H. subtile, Hoffm. Widely cespitose, dark gi-een, 

 strongly coherent ; stems with short erect branches : leaves 

 loose, subsecund or spreading, narrowly lanceolate from an ovate 

 base, entire, ecostate or with obscure traces of a medial nerve ; 

 perichjetial leaves long and narrowly acuminate, entire : ca])sule 

 suberect or subcernuous, oblong, narrowed to a short collum, 

 pale j^ellow, constricted under the orifice when empty ; oper- 

 culum highly convex, apiculate ; peristome as in the last species ; 

 annulus very narrow. — Deutsch. Fl. ii. 70. Leskea suhtilis, 

 HedAV. Muse. Frond, iv. 23, t. 9. Amhhjstegiwm subtile^ Bruch 

 & Schimp. Bryol. Eur. t. 561. 



Hab. Boots of trees; New England, Canada, Goat Island, etc.; not 

 rare. 



118. H. COnfervoides, Brid. Differs from the Inst in its 

 habitat on stones, in the dark green color of the tufts, the stems 

 irregularly branching, pinnately and closely ramulose, the leaves 

 more narrowly acuminate, the areolation more chlorophyllose, 

 the capsule cernuous, often horizontally inclined and reddish 



