Barhula.] BRYACE^. 115 



12, D. obliquus, Bruch & Schimp. Stems short : leaves 

 ovate-oblong oi* ovate-lanceolate, awned or cuspidate by the ex- 

 current costa, revoluble on the borders, closely papillose and 

 chlorophyllose in the upper part, the double papillae distinctly 

 23rominent on the borders : capsule cylindrical, oblique : teeth 

 reddish and bitid to near the base, twisting to the left ; annulus 

 simple. — Bryol. Eur, t, 136. Tortula subei'ecta, Hook, & 

 Wils, in Drumm, Muse, Amer. n, 145, TricJiostomum ohli- 

 qicum^ Muell. Syn. i. 594, 



Hab. Shady alpiue localities; Rocky Mountains {Drummond). 



13, D, Laureri, Bruch & Schimp, Plants soft, in small 

 compact green tufts intermixed with radicles, yellowish 

 below : leaves close, imbricate, spreading, soft, ovate-oblong, 

 the ujjper longer, apiculate, bordered by a narrow yellowish 

 loosely areolate revolute mai-gin, reddish at base, hyaline up- 

 ward to the middle, pai^illose on both faces : capsule pendent 

 from the arcuate pedicel, oblong ; lid small, with a short blunt 

 beak ; teeth purple, slightly twisted, attached to a broad dark 

 red membrane ; annulus double, each series detaching sepa- 

 rately, — Bryol, Eur, t. 135, Trichostomum Laiireri, Schultz, 

 Regensb, Flora, x, 161, Tortxda Laureri^ Lindb. Trichost. 248. 



Hab. Snow Range of the Rocky Mountains, upon the ground [Drum- 

 mond) ; Colorado (Downie, Rothrock, Wolf). 



44, BARBULA, Hedwig. (PL 1,) 

 Mode of growth, habit, and form and reticulation of the leaves 

 as in Trichostomum. Peristome of 16 teeth, divided into 32 

 long filiform segments, twisted to the left, attached to a more or 

 less elongated tubuliform tessellate membrane. 



§ 1, Aloidell^e. — Plants very S7nall, gregarious., annual: 

 leaves rigid, incurved above; costa thickened and dilated 

 toward the apex, and covered with articulate filaments : 

 basilar membrane of the peristome short. 



1. B. brevirostris, Bruch & Schimp. Bisexual: plants 

 very small, gemmiform : lower leaves round-ovate, the upper 

 broadly oblong, obtuse : teeth making a single turn ; annulus 

 broad, revoluble. — Bryol, Eur, t. 138. Tortula brevirostris, 

 Hook. & Grev. ; Lindb. Trichost. 233. 



Hab. Rocky Mountains (Drwjnmond); British Columbia (ilfacoMJi), 



