IlcjKttiar (j/Worf/i Anirriai. 



r,i 



N. 



Lower lobe of leaf auriculate; inner involiicn' with a 



mueronate mouth. VII. Frullania. 

 Lower lobe of leaf concave underneath; inner involucre 



with a small denticulate mouth. X. Madotheca. 

 Inner involucre terete or angular, variously winged, 



cristate or ciliate at the angles, the mouth 3-4-lobed 



or dentate. VIII. Lejeunia. 

 Inner involucre somewhat depressed, plane and l»ilabi- 



ate, the mouth trilobed or tridentate. IX. Phrag- 



MICOMA. 



Inner involucre wanting M 



Inner involucre present N 



Leaves entire or 2-toothed; outer involucre pendent. 

 XVIII. CalypoCtEia. 



Leaves palmately divided; fructification in a fork, not 

 pendent. XV. Trichocolea. 



Leaves 2-cleft to the middle; the divisions lanceolate. 



XIV. Sendtnera. 

 Leaves and amphigastria 8-5-parted half way to the 



base or more, the lobes usually lanceolate. XVII. 



Lepidgzia. 

 Leaves bi-tridentate at the apex. XVI. Bazzania. 

 Amphigastria present p 



Amphigastria wanting XJ 



Amphigastria entire or nearly so Q 



Amidiigastria 2-4-cleft, parted or divided S 



Involucral leaves numerous; inner involucre at first 

 triquetrous often becoming plicate, the mouth den- 

 ticulate, ciliate or laciniate. XXVI. Cephalozia. 



Involucral leaves few R 



* The forms with succuboiis leaves inchided in the ponera bovoiul 

 this point (if the synopsis cannot be satisfactorily arranged in a synojitic 

 table; the characters of the genera are poorly defined and thev contain 

 very diverse forms, some of which are described from imperfect and in- 

 c()mplete data, which makes their reference to geneva inicertain. 



