HT/jmum.] BRYACE.E, 339 



leaves ovate-lanceolate, narrowly acuminate, striate, very entire 

 or rarely distantly serrulate at the apex, slightly falcate, loosely 

 imbricate ; costa narrow, enlarged at the base, vanishing in the 

 middle ; cells of the areolation large, the upper fusiform-acute, 

 the basilar numerous, quadrate ; perichastial leaves small, nearly 

 similar, ecostate : capsule short-j^edicelled, very small, oval, 

 subhorizontal ; operculum conical, dej^ressed ; inner peristome 

 short ; segments subentire ; cilia imperfect or none. — Coult. 

 Bot. Gaz. iv. 162. 



Hab. Rotten wood, roots of trees and shells on the shell mound of 

 Charlotte Harbor (Pme Island), Florida {J. JDonnell Smith, Austin). 

 March. 



The simple short creeping stems, and the small subhorizontal capsule 

 are peculiar characters which easily separate this species from all the 

 others of the group. At first sight it resembles H. microcarpnm, Muell., 

 but the operculum of this last species is long rostrate-subulate, and the 

 leaves are ecostate. The basilar quadrate areolation of the leaves is also 

 j)eculiar. 



43. H. COllinum, Schleich. Monoecious: plants small, in 

 dense hemispherical bright gi-een tufts ; stems creeping, densely 

 radiculose, ramulose ; branchlets short : leaves close, imbricate 

 or subsecund, lanceolate-acuminate from a broadly ovate deeply 

 cordate base, concave, serrulate on the borders, costate to the 

 middle ; basilar cells larger, chlorophyllose, the upper hyaline ; 

 perichretial leaves abruptly narrowed into a short narrow ])oint, 

 ecostate : operculum highly convex, obtusely acuminate ; peri- 

 stome normal ; annulus compound. — Muell. Syn. ii. 429. 

 JSrachythecmm collinum, Bruch &, Schimp. Bryol. Eur. t. 548. 



Hab. Fissures of rocks on high mountains; Rocky Mountains {Drum- 

 mond); Colorado (Downie); Nevada (Watson); Cascade Mountains 

 (Lyall). 



44. H. Utahense. Synoecious : resembling the last, from 

 which it differs in its inflorescence, its smaller size, more deli- 

 cate texture, the oblong-lanceolate leaves, and the erect and 

 symmetrical capsule. — Brachythecium Utahense, James, Bot. 

 King Exp. 409. 



Hab. On sandstone rocks, overhanging dry streamlets near Hanging 

 Rock Station, Echo Canon, Utah [Watson) \ Bald Mountain, Western 

 Montana ( Watson). 



* * Pedicel rough. 



45. H. velutinum, Linn. Monoecious: plants in intricate 

 drooping tufts, bright or yellowish gi-een ; stems creeping, 



