LICHENS 87 



Cups dilated and cyathiform. 



Podetia smooth or squamulose. coccifera. 



Podetia powdery above coccifera pleurota. 



Cups of the podetia small or obsolete. 

 Podetia without squamules. 



Podetia powdery above macilenta. 



Podetia not powdery above bellidiflora hooker i. 



Podetia with squamules. 



Podetia scarcely branched bellidiflora. 



Podetia freely branched. 



Squamules on the podetia few, thin, appressed. 



bellidiflora coccocephala. 

 Squamules on the podetia numerous, thick, spreading. 



bellidijlora ramulosa. 

 Apothecia never scarlet. 



Apothecia pale flesh-colored or reddish. 



Podetia unbranched carneola . 



Podetia branched. 



Dichotomously branched uncialis. 



Irregularly branched amaurocrcea. 



. Apothecia brown. 



Thallus sulphur-colored or straw-colored. 



Thallus densely thyrsoid entangled atyestris. 



Thallus open, not densely thyrsoid entangled. 



sylvatica syhestris. 

 Thallus grayish-green or brownish. 

 Podetia club-shaped. 

 Bearing squamules. 

 Podetia not subulate. 



Branches not proliferous , squamosa. 



Branches proliferous from the margin crispata. 



Podetia subulate. 



Epidermis granulate squamosa muricella. 



Epidermis smooth .furcata racemosa. 



Without squamules. 



Podetia cancellate-carious cariosa corticata. 



Podetia not cancellate-carious. 



Thallus irregularly branched .furcata palamcea. 



Thallus dichotomously or trichotomously branched. 



rangiferina. 

 Podetia not club-shaped. 



