Durand : Classification of the Fleshy Pezizineae 491 



of forms which probably occur may be somewhat more compre- 

 hensive. 



A. Apothecia fleshy or rarely leathery. Tissue usually more or less pseudo-parenchy- 



matous, or composed of coarse hyphae, much septated, and showing a transition 

 to pseudo-parenchyma. 

 B. Asci at maturity forming a uniform layer ; plants usually of medium or large 



A. 



size. 





I. Pezizaceae. 



B. Asci at maturity projecting above the hymenium ; plants of small size usually 

 growing on dung. 



II. ASCOBOLACEAE. 



A. Apothecia waxy, fleshy-waxy, gelatinous or membranous. Tissue usually at least 



partly prosenchymatous, formed of slender; long-drawn-out hyphae rarely 

 septated, not showing a transition to pseudo-parenchyma. 

 B. Excipulum usually prosenchymatous, rarely partly pseudo-parenchymatous, 



III. Helotiaceae. 



always hyaline. 

 B. Excipulum wholly, or at least at the base, pseudo-parenchymatous, the outer 



cells with thick brown walls. 



IV. Mollisiaceae. 



i. Pezizaceae. 



Externally smooth or pruinose. 



B. Stipitate, distinctly cupulate. 



C. Externally venose-sulcate, stem stout. 



C. Externally even, stem slender or short. 



B. Cups sessile or subsessile. 



C. Cups regular, not elongated or split on one side. 



D. Large, exceeding i cm. 



E. Distinctly cupulate, sessile. 



F. Exuding a colorless juice when wounded. 



Acdabida 

 Geop) •xis . 



F. Exuding a milky juice. 

 E. Plane or repand, sessile or subsessile 

 F. Spores elliptical. 

 F. Spores spherical. 

 D. Small, rarely exceeding I cm. 

 E. Subiculum none. 



F. Spores elliptical or fusiform. 

 F. Spores spherical. 

 E. Seated on a subiculum. 

 C. Cups elongated or split on one side. 

 D. Spores elliptical. 

 D. Spores spherical. 

 A. Externally hairy, strigose, setose or tomentose. 

 B. Black strigose at the base, stipitate or sessile. 

 C. Spores elliptical or fusiform. 

 C Spores spherical. 

 B. Not black strigose at the base. 

 C Stipitate. 



D. Apoth#cia light-colored. 



D. Apothecia brown. 



Peziza . 

 Galactinia. 



Disc in a. 

 Dctonia. 



Hum aria. 



Barlaea. 



Pyronetna 



Otidea. 

 Olid el a. 



Plectania. 

 PseuJopUci a n ia 



Sarcoscypha. 

 Macropodia, 



