398 ' BRYACE^. [Hypnum, 



concave angles large, quadrate; paraphyllia large; perichnetial 

 leaves spreading and erect from the middle, the inner long, 

 filiform-apiculate, concave, not plicate : capsule erect or curved 

 above, cylindrical, rostellate ; teeth connate at base ; segments 

 slightly cleft ; cilia generally solitary, shorter than the segments, 

 sometimes none ; annulus narrow, — Ann. N. Y. Lye. Nat. Hist, 

 i. 275, t. 23 ; Bryol. Eur. t. 592. If. curvirostrwn, Brid. Bryol. 

 Univ. ii. 482. Stereodon Ilaldimei, Lindb. 



Hab. Decayed trunks and damp clayey ground in woods, in mountain 

 regions. 



1G4. H. nemorosum, Koch. Slightly more robust than 

 the last ; tufts drooping, dirty green ; stems long, much divided, 

 subpinnately rainulose, continued by long radiculose innova- 

 tions : stem-leaves open, erect, those of the branchlets secund, 

 ovate-oblong, abruptly acuminate, the upper lanceolate, all 

 concave, reflexed on the borders below, generally ecostate, 

 sharply serrate at the apex ; paraphyllia multiform ; perichaetial 

 leaves erect-spreading, the inner oblong, narrowed into a some- 

 what long coarsely serrate point, revolute on the borders, with 

 one or two striae : capsule erect at base, incurved, oblong- 

 cylindrical, ferruginous; pedicel slender, twisted to the right 

 above; lid turgid at base, long-conical; teeth orange at base, 

 pale above ; segments somewhat cleft ; cilia two, nearly as long; 

 annulus narrow, persistent or attached to the lid. — Brid. 1. c. 

 422 ; Bryol. Eur. t. 593. //. subrectifolium, Sulliv. Muse. 

 Allegh. n. 15. 



Had. Decayed wood; high mountains of North Carolina {Sullivant, 

 Gray, Lesquereux). 



Subgenus XXII. LIMNOBIUM. 



Plants prostrate, with few radicles, irregularly branching and 

 ramulose. Leaves generally secund, soft, broadly ovate or ovate- 

 lanceolate, very concave, generally narrowly and unequally 

 bicostate ; perichaetial leaves sulcate. Capsule incurved, cernu- 

 ous, turgid-ovate or oblong. Operculum convex-conical or 

 mamillate. Annulus large. — Liinnohmm, Bruch & Schimp. 



H— Flowers mo7ioecious. 



105. H. palustre, Huds. Tufts large, depressed, blackish 

 or yellowish green ; stems more or less long and divided, naked 



( 



