Bicranum.] BRYACEJ5. gg 



at base, spreading, flexuous or subsecund above, lanceolate- 

 subulate, entire, shorter and narrower than in the two preceding 

 species, very thinly costate ; alar cells large, inflated ; perichas- 

 tial leaves long-sheathing, shorter pointed: capsule smaller, 

 cernuous or incurved, not gibbous but struraose, smooth ; teeth 

 of the peristome narrower : male flowers near the base of the 

 innovations, not close to the perichjetium as in both the preced- 

 ing species. — Bryol. Eur. t. 63. JJ. tSc/dsti, Lindb. 

 Hab. Same as the preceding. 



* * * Plants cesjntose, tomeyitose: areolation inflated at the 

 basal angles : floioers dioecious ; perichcBtium sheathing : 

 capsule erect, long-ovate loith a short equal collum ; pedicel 

 pale, t'lvisted to the left when dry ; teeth narrower. 



5. D. Strictum, Schleich. Plants pale or yellowish green: 

 leaves rigid, very brittle, lanceolate-subulate, canaliculate above ; 

 alar cells very large, orange : teeth dark-orange, irregularly 

 bifid ; annulus very narrow. — Schwsegr. Suppl. i. 188, t. 43 ; 

 Bryol. Eur. t. 66. 



Hab. Decayed trunks; Lake Superior [Agasslz); Little Slave Lake 

 {Macoun)\ Fort Colville {Lyall)\ Northwestern Montana, and on Kettle 

 River and at Spokan Falls, Washington Territory ( Watson) ; mountains 

 of California [Bolander). 



6. D. montanum, Hedw. Plants densely and widely 

 cespitose : leaves soft, spreading or slightly secund, crispate 

 when dry, lanceolate-subulate, concave, serrulate, slightly papil- 

 lose on the back and green above, pale, smooth and loosely 

 areolate in the lower part ; alar cells small, tawny ; perichtBtial 

 leaves abruptly subulate : capsule pale, obscurely striate ; 

 annulus rather large. — Sp. Muse. 143, t. 35 ; Bryol. Eur. t. 67. 



Hab. On decaying trunks, northern and mountain regions; rare. 



7. D. viride, Schimp. Plants pulvinate and cespitose : 



leaves brittle, open-erect, lanceolate-subulate, canaliculate, thick- 



costate ; areolation rectangular, short in the upper part, larg^er 



and hyaline from the middle downward, brown at the angles ; 



perichaetial leaves abruptly subulate : cajjsule oblong, erect 



or slightly curved. — Bryol. Eur. Suppl. Dicranum, 1, t. 1. 



Campylopus viridis, SuUiv. & Lesq. Muse. Bor.-Am. n. 72 ; 



SulHv. Mosses of U. States, 103, and Icon. Muse. 30, t. 18. 



Hab. Trunks of prostrate trees in dense woods; not rare in the North- 

 ern States, but not yet found in fruit. 



