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67.B.Teiitricosuin Dickson. — B. pseudotnquetrum Schwaegv. 

 Leaves as in B. himum. Capsule brown sometimes slightly 

 oblique; neck often long; teeth yellow. Dioecious. Very variable. 

 — Wet places common also in alps. Eur. Sweden eto.l Amer. 

 Can.: Macoun. 



* B.bimoideum Notaris. — »Leaves nearly imbricate suberect; 

 costa longer-excurrent. Lid of capsule long-apiculate. — Eur. 

 r. Switzerl.»: Limpricht. 



* B.hyalodontium C. M. et Kindb. 1. c. 



Capsule pale brown not oblique; teeth pale hyaline. — Wet 

 rocks r. Amer. Can. Brit. Col.: Macoun. 

 68.B.Reyeri Breidler. 



Differs from B. ventrkosum: » Leaves longer finally reddish, 

 narrowly limbate and nearly entire. Capsules unknown. — 

 Dripping alp. rocks r. Eur. Austria: Breidler »: Limpricht. 



C. Leaves not decurrent, broadly limbate and recurved gen. 

 entire; costa excurrent. 



a. Capsule strangulate with wide mouth. Tufts dense. 

 69.B.pallescens Schleicher. 



Leaves gen. ovate-lanceolate, twisted when dry. Capsule pale 

 brown or yellowish us. subclavate and not pendent when young; 

 teeth pale. Tufts us. 2 — 3 c. m. high, often green. Often 

 monoecious. — Earth and rocks also in alps, princ. the nor- 

 thern. Eur. not uncommon. Sweden, Norway, Switzerl.! Amer. 

 Greenl.: Berggren. Can.: Macoun. 



* B.contextuni Hoppe et Homschueh. 



Leaves short-acuminate smaller. Capsule thicker and more 

 distinctly strangulate; pedicel often only 1 c. ra. long. Tufts 

 brown-green often much higher. — Rocks princ. in alps. Eur. 

 Norway ! 

 TO.B.cirratum Hoppe et Hornschueh. 



Leaves gen. ovate or ovate-oblong, not or slightly curled. 

 Capsule brown somewhat thick and pendent; teeth pale. Tufts 

 green us. about 1 c. m. high and less compact than in the 

 last. Spores in some alpine forms somewhat large. Us. synoe- 

 cious. — On earth princ. on old roads in alps. Eur. not r. 

 Norway, Switzerl.! Amer. r. Can.: Macoun. 



* B.sysphinctum Limpricht. 



Leaves denticulate near apex; costa short-excurrent. Capsule 

 smaller thicker and more constricted with shorter neck. Some- 

 times monoecious. — In alps r. Eur. Norwayl; Kaurin. 



b. Capsule small-mouthed not constricted. 



