24 



falcate. Lid of the capsule rarely rostrate; pedicel smooth 

 or (in one species) faintly rough above. Stem sometimes 

 with paraphyllia. 



62. Hypnum. Leaves often raamillose above, less 

 often recurved at the borders. Stem often pinnate. 



Fam. 14. Fontinalaeese. 

 L Fontinalece. Leaves nerveless, not falcate. Cap- 

 sule immersed; lid not often rostrate; calyptra conic. 



63. Fontinalis. Peristome long. Leaves not lim- 

 bate, often tristichous; alar cells more or less distinct. 

 Dioecious or (rarely) paroecious. 



n. Dichelymece Leaves costate and falcate. Cap- 

 sule mostly exserted; lid rostrate; calyptra cucullate. 



64. Dichelyma. Capsule mostly exserted; teeth 

 long; calyptra large. Leaves usually not limbate; alar 

 cells nearly indistinct; costa often excurrent. Dioecious. 



65. Brachelyma. Capsule immersed; teeth short; 

 calyptra very small and short. Leaves limbate ; costa not 

 excurrent. 



Fam. 15. Schistostegacese. 



66. Schistostega. Capsule pedicellate, subglobose. 



Fam .16. EustichiaceBe. 



67. Eustichia. Capsule pedicellate, globose. 



Fam. 17. Polytrichacese. 



A. Leaves limbate by narrow cells, not. sheathing. 



68. Cath&rinea. Leaves not lamelliferous at back, 

 not contracted above the base, usually long, always flaccid, 

 crisped when dry; lamellae few, not sinuolate. Capsule 

 symmetric without angles and appendage (apophysis), not 

 papillose ; calyptra glabrous or at apex rough, long-acumi-; 

 nate. Sometimes paroecious, mostly dioecious.. 



B. Leaves not limbate, usually sheathing. Dioecious.. 

 a. Leaves with sinuolate or serrate lamellae. 



