J 



ANALYSIS OF GENERA. 7 



= = Teeth free. 



42. Trichostomum. Teeth united in pairs to a narro-w basilar 

 membrane; segments equal, filiform, more or less fragmentary. 



41. Leptotrichum. Peristome as in the last; teeth longer, more 

 regular. Leaves long-subulate, glossy. 



44. Barbula. Teeth very long, from a more or less broad tessellate 

 marginal membrane, twisted around the columella. 



= = = Teeth large, adhering by their points to the tympaniform top 



of the columella. 



93. Atrichum. Calyptra spinulose at the apex, cucullate. 



94. Oligotrichum. Calyptra large, covered with scattered hairs. 



95. Psilopilum. Teeth long and slender, some of them bipartite. 

 \ Calyptra narrow, solid, smooth. 



'^ 96. Pogonatum. Calyptra densely hairy, covering the capsule, 

 mitrate. 



++++++ +H. ++ -M- Teeth of the peristome 64. 



97. Polytrichum. Teeth adhering to the membrane, as in the last 



section. Calyptra densely hairy. 



■i- -i- Peristome double: its teeth 16. 

 ++ Capsule symmetrical, erect. Inner peristome of 8 or 16 cilia. 



57. Macromitriura. Teeth lanceolate; inner membrane cleft or 



truncate. Calyptra campanulate, plicate. 



58. Schlotheimia. Teeth revolute, fleshy; inner peristome rudi- 



mentary from a colored membrane. Calyptra campanulate, not 

 plicate. 



59. Encalypta (3d Section). Teeth filiform; cilia similar to the 



teeth. Calyptra very long, cylindrical or campanulate, not pli- 

 cate. 



56. Orthotrichura (2d Section). Teeth 8, bigeminate, or 16, gemi- 

 nate; cilia filiform. Calyptra campanulate-mitrate, plicate, 

 smooth or hairy. 



55. Ulota. Peristome as in OrtTiotrichum. Calyptra yellow, hairy, 

 deeply split at the base, obscurely plicate. 



** ++ Capsule unsymmetrical, inclined to one side, oblique or pendulous. 



. = Inner peristome a plaited cone. 



98. Diphyscium. Capsule gibbous, ovate, sessile. Plants small, 



nearly stemless. 



99. Buxbaumia. Capsule gibbous-ovate on one side, flat to convex 



on the other, short-pedicellate. 



= = Inner peristome a membrane cut into 16 segments; these some- 

 times separated by cilia. Calyptra cucullate. 



74. Funaria. Capsule short-pyriform, curved in the upper part. 

 Teeth obliquely curved; segments of the membrane entire or 

 rudimentary. 



83. Leptobryum. Capsule pyriform, erect or pendulous. Segments 



of the membrane separated by two appendiculate cilia. Leaves 

 narrowly lanceolate. 



84. Webera. Capsule long-pedicellate, cernuous or horizontal: cilia 



none, rudimentary or perfect, not appendiculate. Leaves lanceo- 

 late, glossy; areolatiou narrowly rhomboidal; costa slender. 



