33 



rostrate, not or indistinctly necked; pedicel elongate. 

 Leaves sheathing and channelled, denticulate, crisped when 

 dry; basal cells, at least the inner ones, hyaline; costa 

 not excurrent. Dioecious, rarely fruiting. 



B. Peristome cancellate at base, divided above in 

 filiform, more or less cohering branches. 



V. Cinclidotece. Leaves without lamellae, often 

 smooth; borders thick. Dioecious. 



120. Dialytrichia. Capsule terminal on the stem; 

 pedicel long; teeth faintly twisted. Leaves papillose, obtuse. 



121. Cinclidotus. Capsule placed on small lateral 

 branches, often nearly immersed; pedicel short; teeth not 

 or scarcely twisted. Leaves generally smooth, often acute. 



Fam. 25. Calymperacege. 



122. Calymperes. Capsule oval; pedicel short. 

 Leaves not sheathing, suboblong, entire and convolute, 

 rigid when dry, often with propagula ; basal cells, at least 

 the inner ones, hyaline. Dioecious. Habit of Syrrhopodon. 



Fam. 26. Bncalyptacese, 



123. Encalypta. Leaves very papillose above. Peri- 

 stome variable or wanting. 



1 24. Merceya. Leaves smooth or indistinctly papil- 

 lose. Capsules unknown. 



Fam. 27. Orthotrichacese. 



I. Orthotrichece. Capsule terminal, often immersed; 

 peristome generally double ; segments usually ciliiform ; 

 calyptra mitriform. Leaves usually papillose, often crisped; 

 inner cells not seriate ; alar cells sometimes subquadrate ; 

 costa not excurrent. Stem generally erect and sparingly 

 branching, seldom decumbent. Tufts often pulvinate. 



125. Orthotrichum. Calyptra generally plicate and 

 hairy. 



II. Macromitriece. Capsule lateral, not immersed; 

 calyptra subcampanulate. Leaves indistinctly papillose; 

 cells obhquely seriate, the alar not defined. Stem creep- 

 ing; branches numerous. 



