394 MUSCI. Bryum. 



19. B. provinciate, Philib. Cespitose, bright green, the stems 2 inches long 

 or more, sparingly branched : leaves densely rosulate, loosely imbricated and not 

 twisted when dry, the outer obovate, shortly acuminate, cuspidate with the excur- 

 rent stout red costa, concave, margins below recurved, minutely serrate at the apex ; 

 inner leaves narrower, more acuminate, margins more revolute : capsule long-obconic, 

 pendulous upon a red pedicel, orange-red ; operculum convex : teeth yellow ; ciliolse 

 strongly appendiculate. Schimp. Syn. 2 ed. 432. B. Billarderii, Bruch & Schimp. 

 1. c., t. 336. B. Canariense, Schimp. Syn. 1 ed., not Brid. 



Cafion on Monte Diablo (Bolandcr) ; Europe. 



B. BIMUM, Schreb., has been collected in the East Humboldt Mountains, Nevada ( Watson), 

 and in Washington Territory (Lyall), as well as in British America, the northern Atlantic 

 States, Europe and South America. Steins to 2 or 3 inches high, matted with red rhizoids, 

 yellowish green above, dark brown below : leaves spreading, elliptic to oblong-lanceolate, shortly 

 cuspidate, with rather broad margin and serrate above : capsule as in B. cirrhatum. Also re- 

 sembling B. pscudotriquctrum. Bruch & Schimp. 1. c., t. 363 ; Wilson, 1. c., t. 49 ; Sulliv. in 

 Gray's Man. 2 ed. t. 4. 



B. OREGANUM, Sulliv. (Muse. Wilkes Expl. Exped. 10, t. 7), is densely cespitose, 4 or 5 lines 

 high, with very short bud-like innovations : leaves densely crowded, oblong or obovate-oblong, 

 acute, serrate above, margins rettexed and narrowly bordered, costa reaching the apex ; pericluetial 

 leaves long-oblong, acuminate, with excurrent costa : capsule subpendulous, clavate-oblong, 

 straight or slightly curved, constricted below the mouth when dry ; operculum rather small, 

 hemispherical, apiculate : inner teeth broad, widely gaping, the ciliolae in pairs and conspicuously 

 appendiculate. Oregon, Pickering. 



4- *- Flowers monoecious : costa excurrent. 



20. B. subrotundum, Bridel. Stem much branched, with short bud-like 

 innovations : lower leaves minute, ovate-acuminate, the upper densely imbricated, 

 broadly ovate- or oblong-lanceolate, concave with Hat margin, shortly awned, becom- 

 ing with age reddish brown with blackish costa : capsule inclined or subpendulous, 

 brown, round- or rarely oblong-pyriform, slightly contracted below the small orifice 

 when dry ; operculum minute, mamillate : peristome ferruginous at base, pale yellow 

 above. Bruch & Schimp. 1. c., t. 361. B. pallescens, var. 8, same, 1. c., t. 360. 



On rocks, Yosemite Valley {Bolandcr); British America (Drummond) ; Europe. 



B. PALLESCENS, Schwaegr., may be distinguished by its rather narrower and less concave 

 leaves with revolute margins, reddish at base, and the clavate-pyriform capsule with long collum, 

 becoming contracted below the mouth, yellowish, at length reddish brown ; stems 1 or 2 inches 

 high. Suppl. t. 75 ; Bruch & Schimp. 1. c., t. 359 ; Wilson, 1. c., t. 48. In Washington Ter- 

 ritory and the Wahsatch ; Arctic America to the northern Atlantic States, and in Europe. 



t -i Flowers dioecious ; male flowers bud-like. 

 w- Costa more or less excurrent. 



21. B. caespiticiuin, Linn. Cespitose, pale green and somewhat sericeous, 

 ferruginous and tomentose below ; stems 3 to 1 2 lines long : lower leaves minute, 

 lanceolate, the upper loosely imbricated, ovate- to oblong-lanceolate, long-cuspidate, 

 concave, margins entire, reflexed : capsule brown, inclined or pendulous, oblong- or 

 elongated-pyriform with broad mamillate yellow operculum : peristome ferruginous, 

 inner teeth broadly fissured. Engl. Bot. t. 1904; Bruch & Schimp. 1. c., t. 374, 

 375 ; Wilson, 1. c., t. 29 ; Fl. Dan. t. 2565. 



In the Sierra Nevada, in several localities (Brewer, Bolandcr) ; West Humboldt Mountains, 

 Nevada, and in the Wahsatch (Watson); Washington Territory (Lyall) ; Arctic America to the 

 Atlantic States ; South America and the Old World. 



B. ATROPURPUKEUM, Weber & Mohr, is a similar species, with more shortly apiculate and 

 more loosely areolate leaves, the capsule oval with a turgid abruptly contracted collum, pendulous 

 on an arcuate pedicel, red becoming dark purple, with a broad prominently convex apiculate 

 pale-purple operculum. Bruch & Schimp. 1. c., t. 378 ; Wilson, 1. c., t. 50. It occurs in the 

 mountains of Nevada (Watson), as well as in the Atlantic States, Europe and Africa. 



22. B. capillare, Linn. Cespitose, bright or dull green, brownish and brown- 

 tomentose below : stems 3 to 12 lines high, sparingly branched with more or less 



