24 CRYPTOGAMIA MUSCI. 



j"f Fringe double : Fruit-stalks terminal 



15. BART KAMI A. Capsule subglobose. Outer fringe of 16 teeth; 



the inner of a membrane divided into 16 bifid segments. 

 Calyptra dimidiate. 



16. BRYUM. Capsule ovate-oblong, drooping, Outer fringe of 16 



teeth ; the inner of a membrane cut into 16 equal seg- 

 ments, with filiform processes frequently placed between 

 them. Calyptra dimidiate. 



17. FUNARIA. Capsule pear-shaped. Outer fringe Q 16 teeth ; the 



inner also of 1 6 opposite to those of the outer. Calyptra 

 mitral, pointed. 



18. ORTHOTRICHUM. Capsule cylindraceous, erect. Outer fringe 



of 16 teeth approaching in pairs ; inner one of 8 or 16 ci- 

 liary processes, sometimes wanting. Calyptra mitral, 

 grooved, more or less pilose. 



19. POLYTRICHUM. Outer fringe of 32 or 64 equidistant incurved 



teeth ; inner one of a dense horizontal membrane connected 

 with the outer teeth. Calyptra dimidiate, commonly 

 double, the external one pilose. 



*|"f--|- Fringe single : Calyptra dimidiate, 



20. TORTULA. Fruitstalks terminal. Fringe of 32 filiform twisted 



teeth, more or less united at the base by a tube-like mem- 

 brane. 



21. DIDYMODON. Fruitstalks terminal. Fringe of 16 or 32 teeth 



approaching in pairs, or united at the base. 



22. DICRANUM. Fruitstalks terminal, or rarely lateral. Fringe 



of 1 6 bifid equidistant teeth. 



23. WEISSIA Fruitstalks terminal. Fringe of 16 entire equidis- 



tant teeth. 



j-f--j-|- F r i n g e single : Calyptra mitral. 



24. CitfcLiDOTUs. Fruitstalks terminal, on short lateral branches 



