— 381 — 



above; their leaves longer acuminate with narrower cells. — 

 Amer. r. Can.: Macoun. 

 154.6.alaskannin Kindb. n. sp. 



Leaves broad-ovate apiculate or very short-acuminate, reflexed 

 all around; cells wide, the upper subrhombic; costa short-ex- 

 current. Capsule short but not thick, subclavate-piriform; lid 

 convex mamillate; pedicel not long. Fruiting stem tomentose 

 with shorter and longer shoots. Uppermost leaves of stem and 

 shorter shoots glomerate; those of longer shoots not glomerate. 

 — Arctic district r. Amer. Alaska: J. M. Macoun. 



D. Leaves gen. broadly limbate and not (or only on shoots) 

 decurrent, us. crowded; costa excurrent. Us. synoecious. 



a. Spores very large, about 0,04—0,05 m. m. 

 155.B.longisetum Blandow. 



Leaves ovate-oblong acuminate, not reflexed above, smaller 

 than in B. iiKlinatum: the uppermost not distinctly glomerate; 

 upper cells narrow; costa short-excurrent. Capsule thick sub- 

 oval short-necked; lid convex apiculate; teeth yellow; pedicel 

 us. 5 — 10 c. m. long. Stems very short or nearly indistinct, 

 not densely cohering; shoots short. — Swamps and turf-moors 

 also below alps r. Ewr. Norway! Germany: Holler, com. 

 Warnstorf. 

 * B.labradorense Philibert. 



Leaves somewhat shorter and broader; costa longer excurrent. 

 Capsule shorter; pedicel gen. about 3 c. m. long. — Alp. 

 swamps r. Eur. Norway! Amer. »Can.»: Philibert. 

 156.B.murinanicvim Brotherus. 



Leaves ovate acuminate, reflexed all around: the uppermost 

 glomerate; upper cells suboblong; costa short-excurrent to an 

 often deflexed point. Capsule broad-oval somewhat long-necked; 

 lid flat apiculate; teeth pale; pedicel 3 c. m. long. Stem about 

 1 c. m. high. Tufts dense blackish about 2,5 c. m. high; 

 shoots glossy green. — Wet sand by rivers r. Eur. Russian 

 Lapland: Brotherus. 



b. Spores less large, about 0,03 m. m. or smaller. Upper 

 leaves reflexed all around. 



aa. Upper leaves obtusate or short-acuminate. Capsule sub- 

 globose scarcely longer than neck. 

 157.B.salinum Hagen. 



Upper leaves ovate-oblong acute; costa somewhat long-excur- 

 rent (in lower leaves not excurrent). Capsule pale brown not 

 constricted below mouth; lid small apiculate or rostellate; teeth 



