622 MUSCI. (MOSSES.) 



# # Dicccio is: stems tomentose: capsule erect, regular. 



12. I>. montanum, Hcdvv. Compactly csespitose ; leaves bright-green- 

 soft, patent, rather secund,- crisped when dry, lanceolate-subulate, serrate on the 

 margin, and papillose on the back at the apex ; costa strong, percurrent ; cap- 

 eule oblong, sulcate when dry ; annulus double. On trunks of trees, Goat Isl- 

 and, Niagara Falls, Lesquereux. (Eu.) 



13. I>. fla^cllarc, Hedw. Near the last species, but distinct by its nu 

 merous fragile and short erect flagcllae, furnished with minute appressed lanceo- 

 late ccostato leaves; stem-leaves greenish-yellow, more falcate-secund; the cap- 

 sule longer and narrower. On decayed logs in woods ; very common. (Eu,) 



14. D. interruptliin, Br. & Sch. Stems l'-2' high; leaves long, 

 secund-falcate, or spreading every way, flexuous, subulately attenuated from a 

 lanceolate base; costa broad, predominant, denticulate at the apex; capsule 

 cylindrical, annulate, dark brown. On rocks in mountain districts. A rather 

 harsh, dark-green species, somewhat larger than No. 12 and 13. (Eu ) 



15. D. longifolilllll, Hedw. Loosely caespitose, pale-green ; stems 

 elongated, slender, arcuate-ascending ; leaves circinate-secund, verv long, fili- 

 formly attenuated, with a remarkably broad costa, denticulate on the margins 

 and the back at the apex ; capsule elliptic-cylindrical. Shaded rocks, Alle- 

 ghany Mountains. (Eu.) 



* * * Dioecious : stems tomentose : capsule incurvcd-cernuous. 



16. I>. Seopnrium, L. Loosely caspitosc; stems 2' -4' high; leaves 

 secund or falcate-secund, lanceolate-subulate, carinate-concave, serrate at the 

 apex ; costa with prominent ridges at the back, dentate above ; capsule cylin- 

 drical, slightly cernuous. Var. PALLIDUM (Muse. Alleghan., No. 155) has 

 narrower leaves, with a looser areolation. the lower areola3 not sinuous, the costa 

 with ridges only near the point; pedicel pale yellow. Alleghany Mountains; 

 rare. The variety in districts not mountainous, and very common. (Tab. 

 16.) (Eu.) 



17. D. eIOBiatiii2i. Schwaegr. Compactly casspitose; stems slender, 

 4' -5' long; leaves lanceolate-subulate,. entire, erect-patent; capsule gibbous- 

 ovate, striate, annulate. High peaks of the Alleghany Mountains : north shore 

 of Lake Superior, Agassi-. (Eu.) 



18. D. COiigetum, Brid. Loosely csespitose; leaves spreading, sub- 

 secund, flexuous, lanceolate-subulate, denticulate at the apex, crisped when dry ; 

 costa strong, excurrent ; capsule oval-oblong, much incurved, striated. On 

 rocks, in mountainous districts ; common. (Eu.) 



19. I>. palifiStre, Brid. Stems 3' -4' high; leaves spreading, linear- 

 lanceolate, undulated, serrate on the margin and also the back at the apex ; 

 costa slender and vanishing below the point ; capsule oval-oblong, slightly in- 

 curved, striated ; annulu.s none. In cranberry marshes, Northern Ohio, Les- 

 quereux. (Eu.) 



20. I>. Scliradcri, Web. Mohr. Densely tufted; stems 3' -5' long j 

 leaves crowded, erect-patent, oblong-lanceolate, rather obtuse, undulated, thft 

 upper half serrated on the margins and papillose on the back ; costa ceasing 



