124 lUinois State Lahoratonj of Natural History. 



G^ 



'' Inner involucre compressed. Tribe V, Radule^. 

 Inner involucre terete, dentate. Tribe IV. Jukger- 



MAKIE.^. 



Inner involucre terete, fissured. Tribe VII. Chilo- 



^ SCTPHE^. 



Tribe I. CoDOKiE^. 



Capsule chartaceous. Fossomhronia. 

 Capsule coriaceous. Codonki. 



Trihe II. Lejeuniace^. 



Inner involucre depressed at the apex_, caudate. Col lira. 

 Inner involucre rotund at the apex, ecaudate. Lejeunia, 



Trihe III. Madothece^. 

 Inner involucre compressed. Madotheca. 



Trihe IV. Jubule^. 



Involucre 2-leaved. Juhiila. 



Involucre indefinite B 



Elaters solitary. FruUania. 

 Elaters double. Plirai/Diiconia. 



Tribe V. Radule.^. 



Involucre indefinite^ the leaves bilobed B 



Involucre 2-leaved, the leaves simple C 



Capsule semipellucid, funnel form. Radula. 

 Capsule coriaceous, decussate. Seapania. 



Leaves of involucre foliose. Phtgioehila. 

 Leaves of involucre squamiform. Adelaiithiis. 



