124 Illinois State Loboratory of Natural History. 



G4 



Inner involucre compressed. Tribe V. Radule^. 

 Inner involucre terete, dentate. Tribe IV. Junger- 



MANIE.^. 



Inner involucre terete, fissured. Tribe VII. Chilo- 



SCYPHE^. 



Tribe I. Codonie^. 



Capsule cliartaceous. Fossombronia. 

 Capsule coriaceous. Codonia. 



Tribe II. Lejeuniace^. 



Inner involucre depressed at tlie apex^ caudate. Colura. 

 Inner involucre rotund at the apex, ecaudate. Lejeunia, 



Tribe III. Madothece^. 

 Inner involucre compressed. Madotheca. 



Tribe IV. Jubule^. 

 \ Involucre 2-leaved. Jubula. 



a\ 



I Involucre indefinite B 



\ Elaters solitary. Frullania. 

 i Elaters double. Phragmicoma. 



Tribe V. Radule^. 



\ Involucre indefinite^ the leaves bilobed B 



i Involucre 2-leaved, the leaves simple C 



\ Capsule semipellucid, funnel form. Badula. 

 i Capsule coriaceous, decussate. Scapania. 



\ Leaves of involucre foliose. Plagiochila. 



^ Leaves of involucre squamiform. Adelanthus. 



