PEZIZA 253 



largest of the cup-shaped Pezizae, known by the thick, brittle, 

 watery substance, never hairy nor spiny outside. Ludwig 

 has stated that Peziza vesiculosa (Bull.) sometimes becomes a 

 true parasite ; he found it attacking species of Balsamina, 

 Hyarinthus, Sidalcea, etc. Plants supposed to have been 

 killed by the fungus, when placed under a bell-jar were soon 

 covered with the conidial form of the fungus, first described 

 by Brefeld, who produced this form from germinating asco- 

 spores. The ascospores are clustered and often irregular from 



V 



"~%M 



\ --tfA^- 



*.:;. ^-S'- '.%?! '"\W*rj$fc / ; 'K- 



^^;^' r; ^^^i^^ 



-^* "'^ ; ''S-*v;p~' 



.;%-f- 

 FIG. 73. Peziza vesiculosa. Group of fungi, nat. size. 



mutual pressure, externally brownish and coarsely granular, 

 disc pale brown, 3-7 cm. across ; asci long, cylindrical ; spores 

 elliptical, hyaline, smooth, 2 1-24 x 11-12 p. 



The conidial form belongs to the form-genus Cephalo- 

 sporium, pure white, sterile hyphae creeping, giving off numerous 

 short lateral branches of about equal length, each tipped by a 

 swollen head covered with elliptical, hyaline, continuous 

 spores, 8-10X3-4 ft. Common on rich soil, manure heaps, 

 rotten leaves, etc. 



Brefeld, O., Unters. Gessammt. Mykol., 9 Heft, p. 333, pi. 

 13, figs. 16-28 (1891). 



Ludwig, Zeitschr. fur Pflanzenkr., 1895, P- I2 



