Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] 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, Hyacinthus, Sidakea, 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
Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] 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, Hyacinthus, Sidakea, 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 , \ 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 /x. 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 \i- Common on rich soil, manure heaps, rotten leaves, etc. Brefeld, 0., Unters. Gessainmt. MykoL, 9 Heft, p. 333, pi. 13, figs. 16-28 (1891). Ludwig, Pflanzenkr., 1895, p. 12,
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