GENERA -OF FUNGI 



(x) Apothecia not branched-stipitate at 

 the tips of branches 

 m. Apothecia gelatinous 

 n. Apothecia not gelatinous 



(m) Apothecia usually dark or black, 

 carbonous to leathery, rarely 

 waxy 

 (n) Apothecia usually bright colored, 

 waxy to fleshy 

 r. Apothecia typically waxy, on plant 

 parts 

 (r) Exciple brownish, parenchy- 

 matic all over or at the 

 base; mostly sessile 

 (s) Exciple concolorous, prosen- 

 chymatic ; mostly stalked 

 s. Apothecia typically fleshy, usually 

 terrestrial, often' fimicole 

 (r) Apothecia usually terrestrial, 

 medium to large ; asci most- 

 ly cylindric, not exserted 

 (s) Apothecia usually fimicole; 

 asci broad, exserted from 

 disk at maturity 

 (y) Apothecia branched-stipitate at the 

 tips of branches 

 (2) Thallus present 



(a) Asci disappearing early; disk with a 



mazaedium 



(b) Asci persistent ; mazaedium absent 



X. Thallus cottony, cobwebby or spongy ; al- 

 gae yellow-green 

 y. Thallus more or less distinctly gelati- 



ous ; algae blue-green 

 z. Thallus firm, layered, neither gelatinous 

 nor cottony 

 (x) Thallus of two sorts : one horizontal, 

 the other erect, i. e., a podetium 

 (y) Thallus of one sort only, horizontal 

 or erect 

 m. Spores typically 2-ceIled, with a 

 thickened cross-wall, usually tra- 

 versed by a narrow canal 

 n. Spores without thickened cross-wall 

 and intersecting canal 

 (ra) Apothecia sunken, or grown 

 together with the thallus on 

 the whole underside 

 (n) Apothecia typically superficial 

 when mature, not attached 

 broadly 



Bulgariaceae 



Patellariaceae 



66 



68 



Mollisiaceae 

 Helotiaceae 



Pezizaceae 



84 

 86 



88 



Cladoniaceae 



Physciaceae 



Peltophoraceae 



78 



83 



75 



