BARNES NORTH AMERICAN 3I0SSES. 165 



++ -M- Inner peristome a membrane, carinate or cut into sixteen 

 segments; these sometimes separated hy cilia. 



= Cilia very short, rudimentary or none. 



Membrane entire, 16-carinate .... Cinclidinm, 249. 221. 

 Membrane cleft into segments. 



Segments entire or interruptedly cleft along the middle line. 



Shorter than the teeth or rudimentary . . Fiinaria, 200. 210, 

 Equaling the teeth in length. 



Leaves squarrose-recurved from the middle . Paludella, 213. 

 Leaves not squarrose. 

 Pedicel long. 

 Leaf-cells narrowly rhombic-hexagonal, tending 



to linear, leaves narrow . . . Webera, 215. 211. 

 Leaf -cells and leaves broader . . . Bryurn, 223. 214. 



Pedicel short, neck long .... Zieria, 240. 219. 

 Far exceeding the teeth in length. 



Pedicel long, leaf-cells large, pellucid . Amblyodon, 211. 

 Pedicel long, leaf-cells small, rectangular, chloro- 



phyllose Meesia, 212. 211. 



Pedicel short, neck long .... Zieria, 240. 219. 



Segments bifid, divisions divaricate. 



Leaves lanceolate to subulate, large . . Bartrainia, 203. 210. 



Leaves lanceolate or broader, smaller . Pliilonotis, 208. 211. 



Segments filiform, united by fours at their tips . Tiinmia, 254. 221. 



= := Cilia present. 



Appendiculate. 

 Leaves lance-subulate, cells linear . . . Leptobryum, 215. 

 Leaves broader, cells rhombic-hexagonal . . Bryum, 223. 214. 



Inappendiculate. 



Capsule not ribbed when dry. 

 Leaves lanceolate, glossy, cells narrowly rhombic- 

 hexagonal, inclining to linear . . . Webera, 215. 211. 

 Leaves ample, soft, oblong, ovate to obovate or 



broader, cells round-hexagonal . . . Mnium, 241. 219. 

 Leaves narrowly lanceolate, rigid , . Rhizogonium, 250. 

 Capsule ribbed when dry. 

 Oblong or elongated pyriform . . . Aulacomnium, 252. 221. 

 Sub-globose • Philonotis, 208. 211. 



