4. CENOTHALAMEiE. 
409 
PZ. ceZZ. aph. 
A. y ipothecia nearly globose, not bordered , terminating a 
solid podeiium. Bsemycideae. 
Thallus shrublike, branched, cartilaginous; 
Z'fl'rA crustaceous, unequal Stereocaulon. 91* 
Thallus rather crustaceous, uniform, 
lying close; apothecia at first bordered Isidium. 92. 
Thallus crustaceous, uniform, close ; 
podetia soft ; apothecia large Bjemyces. 93* 
B. Apothecia nearly globose , not bordered , terminating a 
hollow , cylindrical thallus or podeiium. Cenomycidese. 
Thallus cylindrical, soft, awlshape ; 
axillae not perforated Cerania. 94. 
Thallus leaflike, very small ; podetia car- 
tilaginous, stifli awlshape ; axillce mostly 
perforated Cladonia. 95* 
Thallus leaflike; podetia cylindrical; 
apex fringed, radiated, rays fertile Helopodia. 96. 
Thallus leaflike; podetia dilated above, 
cuplike, cup open Schasmaria. 97. 
Thallus leaflike ; podetia dilated above, 
cuplike, cup closed * Scyphophora. 98. 
Thallus crustlike, uniform ; 
podetia hollow, short Pycnothelia. 99. 
C. Apothecia shieldlike , bordered, lateral : thallus nearly 
crustaceous , branched. Evernidece. 
Thallus compressed, inside towlike; 
apothecia sessile, circumference raised .... Evernia. 100. 
D. Apothecia shieldlike , bordered ; thallus leatherlike 9 
cartilaginous , leafy. Peltidese. 
Apoth. adnate, terminal, ascending ; 
thallus leaflike, lobed, expanded ........ Peltidea. 103. 
Apoth. adnate, terminal, resupinate ; 
thallus leaflike, lobed, expanded Nephroma. 102. 
Apoth. adnate, subcentral, discoid ; 
thallus leaflike, lobed, expanded Solorina. 104. 
Apothecia sessile, lateral ; 
thallus branched, inside towlike Rocella. 101. 
