38 



trie, often clustered ; endostome orange ; cilia long-appen- 

 diculate. Leaves serrate ; cells diversiform, mostly narrow, 

 the lower long-rectangular, the uppermost oblong-oval or 

 hexagonal. Paraphyses filiform. 



VI. Bryece. Leaves smooth ; cells polygonal, mostly 

 not large. Capsule solitary, not striate. Stem neither 

 rhizomatic nor stoloniferous. Lower leaves not squami- 

 form Tufts generally dense. 



155. Bryum. Capsule symmetric or (less often) 

 asymmetric; endostome generally pale or pale-yellow; 

 ciha often appendiculate. Leaves often entire ; cells diversi- 

 form, the lower (or all) more or less elongate, the upper 

 seldom round-hexagonal. Paraphyses filiform. 



156. Leptotheca. Capsule symmetric; teeth very 

 long and narrow. 



Fam. 33. Buxbaumiaoese. 



157. Buxbaumia. Capsule pedicellate; peristome 

 double. Leaves nerveless, nearly indistinct. 



158. Diphyscium. Capsule immersed ; exostome 

 none. Leaves costate, diversiform; the perichetial large. 



Fam. 34. AndresBaoese. 



159. Andrecea. Leaves usually blackish or brow- 

 nish when dry. Tufts loosely cohering. Growing on rocks, 

 sometimes in running water. 



Fam. 35. Bruohiacese. 



I. Bruchieoe. Stem distinct. Leaves costate, smooth 

 or (sometimes in Bruchia) obsoletely papillose. 



A. Capsule pedicellate, neck often distinct. Spores 

 0,02 — 0,04 mm. Prothallium seldom persistent. 



160. Bruchia. Capsule often exserted; columella 

 persistent. Calyptra mostly campanulate, sometimes split 

 at one side. Leaves usually crowded. 



161. Pleuridium. Capsule usually immersed, mostly 

 ovoid; columella usually persistent. Calyptra mostly sub- 

 cucullate. Leaves usually distant. 



