BARNES NORTH AMERICAN MOSSES. 165 



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

 segments; these sometimes separated by cilia. 



= Cilia very short, rudimentary or none. 



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

 Membrane cleft into segments. 



Segments entire or interruptedly cleft along the middle line. 

 Shorter than the teeth or rudimentary . . Funaria, 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 -eel Is and leaves broader . . . Bryum, 223. 214. 

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

 Far exceeding the teeth in length. 



Pedicel long, leaf-cells large, pellucid . Am bl yotloii, 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 . . Bartramia, 203. 210. 



Leaves lanceolate or broader, smaller . Philonotis, 208. 21 K 



Segments filiform, united by fours at then- tips . Timmia, 254. 221. 



= = Cilia present. 

 Appendiculate. 



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

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

 Inappendiculate . 

 Capsule not ribbed when dry. 

 Leaves lanceolate, glossy, cells narrowly rhombic- 

 hexagonal, inclining to linear . . . Webera, 215. 21 K 

 Leaves ample, soft, oblong, ovate to obovate or 



broader, cells round-hexagonal . . . Mnium, 241. 21 9 

 Leaves narrowly lanceolate, rigid , . Rhizogoninm, 250. 

 Capsule ribbed when dry. 



Oblong or elongated pyriform . . . Anlacomnium, 252. 22U 

 Sub-globose . . ...... . Philonotis, 208. 211. 



