124 Illinois State Laboratory of Natural History. 



Inner involucre compressed. Tribe V. RADULE^E. 

 Inner involucre terete, dentate. Tribe IV. JU^GER- 



Inner involucre terete, fissured. Tribe VII. CHILO- 

 SCYPHE^E. 



Tribe I. 



Capsule chartaceous. Fossombronia. 

 Capsule coriaceous. Codonia. 



Tribe II. LEJEUKIACE^:. 



Inner involucre depressed at the apex, caudate. Colura. 

 Inner involucre rotund at the apex, ecaudate. Lejeunia. 



Tribe III. MADOTHECE^. 

 Inner involucre compressed. Madotheca. 



Tribe IV. JUBULE.E. 



Involucre 2-leaved. Jubula. 



Involucre indefinite ............................. B 



\ Elaters solitary. Frullania. 

 j Elaters double. Phragmicoma. 



Tribe V. 

 ( Involucre indefinite, the leaves bilobed ............. B 



A J 



| Involucre 2-leaved, the leaves simple ............... C 



( Capsule semipellucid, funnel form. Eadula. 

 B < 



^ Capsule coriaceous, decussate. Scapania. 



( Leaves of involucre foliose. Placjiochila. 



\ 



I Leaves of involucre squamiform. AdelantJius. 



