BARNES NORTH AMERICAN MOSSES. 263 



slender, branching, densely foliate: leaves very patent when moist, flexu- 

 ous, from a broader oblong base narrowed into the very narrow and long 

 often piliform acumen, margins entire and erect; cells small, quadrate, 

 chlorophyllose, opaque; costa very thin, vanishing in the acumen: perichae- 

 tial leaves broader, vaginant at base, shorter than the others, densely 

 appressed involving the pedicel: capsule cylindric, very narrow, faintly 

 curved; lid obliquely restorate; pedicel yellowish, elongate, slender, spirally 

 twisted, narrowed to the capsule. Mac. Cat. 14. Mountains near Silver 

 City, N. W. T., altitude 7,700 ft. 



49. Weisia viridula nitida Ren. & Card. Leaves shorter, capsule nar- 

 row, sub- cylindrical, shining as though varnished and distinctly sulcate 

 when dry. Bot. Gaz. 14: 91. 1889. On sandy ground: Florida; Louisana. 



50. Weisia yiridula Rugeliana Ren. & Card. Calyptra larger, oper- 

 culum longer rostrate. Revue Bryol. 19: 73. 1892. Georgia. 



51. Cynodontium snbalpestre Kindb. Tufts green, about 1 cm. high 

 or lower: leaves crisped, from the narrowly ovate-oblong base attenuate- 

 subulate, acute, nearly smooth as also on the costa, entire or distinctly 

 denticulate above; borders recurved to middle at one side; cells pellucid, 

 mostly quadrate, alar much wider, rectangular, hyaline: perichsetial leaves 

 with a broader base, inner ones much shorter: capsule small, subcylindric- 

 clavate, wide-mouthed, faintly striate when dry; teeth pale, bifid, not pa- 

 pillose; annulus wanting; lid conic, short rostrate; pedicel yellow, finely 

 bright red. Mac. Cat. 17, 257. Rocks near water: Labrador; Quebec; 

 Lake Huron; Lake Superior; Lake Nepigon. 



52. Cynodontium stranmlosnm C. M. & Kindb. Tufts bright green, 

 1-2 cm. high: leaves crisped, sub-linear, blunt or sub-acute, recurved at 

 the basal margins, crenulate above, nearly pellucid; basal cells linear, the 

 others short, angular; costa very papillose at the back, not percurrent: 

 perichaetial leaves short acuminate: capsule small, oblique, oblong-ovate, 

 inclined, when dry furrowed, distinctly strumose; teeth not papillose, cleft 

 to the middle, reddish also in the upper part; annulus distinct; pedicel 

 light red or yellow, straight, 1 cm. long. Mac. Cat. 16. Limestone rock 

 along a torrent near Hector, B. C. 



53. Dichodoiitiuni pellucidiim fagimontannm Sch. Plants shorter, 

 more dense, with shorter branches: leaves shorter, more obtuse, scarcely 

 recurved; capsule smaller, less inclined. Braithw. Brit. Moss Flora 1: 

 163. Hector, B. C. 



54. Dickodontium Olympicum Ren. & Card. Differs from much 

 more robust D. pellucidum thus: leaves strongly papillose, minutely den- 

 ticulate almost all around: capsule strumose at base: plants delicate, 

 scarcely 1 cm. high. Bot. Gaz. 17: 296. 1892. Olympic Mts., Wash. 



55. Trematodon brevicollis Hsch. Monoicous: tufts small, stems 2-4 

 cm. high: leaves imbricate, lower smaller and loosely appressed, long and 



