13 



A. Leaves generally papillose or mamillose; cells 

 sometimes diversiform. Capsule with indistinct or short 

 neck. 



Fam. 30. Bartramiacese. 



Calyptra cucullate, entire, not inflate. Capsule sub- 

 globose or finally oblique; teeth often without longitudinal 

 line; endostome sometimes with cilia. Tufts dense. Leaves 

 mostly narrow. Plants perennial, growing on rocks or 

 in swamps. 



B. Leaves generally smooth (in Aulacomnium and 

 Ttmmia sometimes papillose); cells polygonal, nearly 

 uniform or gradually passing to the longer basal ones. 

 Capsule often necked. 



Fam. 31. Funariacese. 



Calyptra inflate. Peristomial teeth without longitudi- 

 nal line ; endostome without ciha. 



Calyptra often split or lobulate at base, mitriform 

 or cucullate. Leaves very thin. Plants generally annual, 

 small and not tufted, growing on earth. 



Fam. 32. Bryaoese. 



Calyptra not inflate. Peristomial teeth with longi- 

 tudinal line; endostome often with cilia. 



Calyptra entire, cucullate. Plants generally perennial, 

 mostly tufted, growing on earth and stone, sometimes in 

 swamps, less often on trees. 



Section 3. Pseud- Arthrodontce. Endostomial seg- 

 ments wholly confluent to a plicate membrane; teeth in- 

 completely articulate or wanting. Leaves not comphcate, 

 sometimes very small and nearly indistinct. 



Fam. 33. BuxbaumiaceBe. 

 Plants small. Stem often indistinct. 



Tribe 2. Schizocarpous. 



Capsule dehiscing by 4 longitudinal slits, cohering 

 above. Peristome none. 



