AiJALYSIS OF GENERA. 5 



55. Ulota (2 species). Capsule longer-pedicellate, defluent into a long 

 cuiluiii. Calyptra yellow, hairy, split at base. 



= = Calyptra not plicate. 



36. Brachyodus. Plants very small. Teeth hyaline-punctulatc, 



more or less perforate. Calyptra 5-lobed at base, split on one 

 side to near the apex. 



37. Campylosteleum. Capsule thin, on a long slender geniculate 



pcaieel. I'eeth cleft to the middle or lower. Calyptra long- 

 subulate. 



26. Conomitrium. Calyptra short-conical, solid. Teeth entire or 



laciniate at the apex. Plants floating. 



45. Cinclidotus. Calyptra split at base on one side. Teeth can- 



cellate, muUifid, membranous. 



46. Grimmia. Teeth lanceolate, entire, cribrose or 2-3-cleft at the 



apex. Capsule oval, short-pedicellate. Leaves smooth, generally 

 hair-pointed. 



47. Racomitrium. Plants of large size. Calyptra subulate. Teeth 



2-3-cleft into filiform segments. 



66. Dissodon. Calyptra large, constricted at base. Teeth short or 



truncate, bigeminate. 



67. Tayloria. Teeth long, loricate, entire or bifid, attached below 



the orifice. 



69. Splachnum. Capsule with large apophysis. Teeth bigeminate. 

 Calyptra small, conical, entire. 



++++++++ Teeth of the peristome 16. Calyptra cucuUiform. 



= Leaves two-ranked. 



25. Pissidens. Leaves frondiform. Teeth articulate, cleft to the 

 middle into two unequal segments. 



31. Distichium. Leaves subulate. Teeth linear, nearly entire, or 



bifid, or lacerate. 



32. Eustichia. Leaves imbricate, carinate-compressed, with long 



flexuous points. Fruit unknown. 



= = Leaves spreading every way. 



a. Capsule cernuous-inclined, unequal. 



15. Oreoweisia. Teeth abruptly lanceolate-subulate from an en- 

 larged base ; articulations prominent. Leaves serrulate. 



17. Cynodontium. Capsule short-ovate; coUum distinct, regular or 



strumose. Segments of the teeth unequal. Leaves serrulate at 

 apex. 



18. Dichodontium. Capsule solid; col! um short. Teeth large, bifid 



or tririd to below the middle. Leaves sheathing at base. 



19. Trematodon. Capsule long-pedicellate, narrowed into a long 



apophysis. Teeth nearly entire or irregularly bifid to the base. 

 •^21. Dicranella. Plants small. Leaves smooth, squarrose or secund. 



Teeth as in Dicraniim. 

 •^ 22. Dicranum. Plants large. Teeth regularly bifid to the middle, 

 closely articulate. Areolation linear" at the base, quadrate and 

 inflated at the angles. 



27. Leucobryum. Plants soft, yellowish, spongy. Leaves without 



costa. Teeth as in Dicranum. 



