MYCOLOGIA 



Vol. IX March, 1917 No. 2 



PHOTOGRAPHS AND DESCRIPTIONS OF 



CUP-FUNGI— V. DISCINA VENOSA /W^ 0 * 1 "* 



A? 



Fred J. Seavee MAR 2 4 19 



(With Plate 5) \ 



During the past two seasons, a number of specimens of Discina 

 venosa, one of the largest and most attractive species of the cup- 

 fungi, have been referred to the writer for determination. 



As shown in the accompanying photograph and as indicated by 

 the specific name, the hymenium shows a strong tendency to be- 

 come folded into vein-like markings. While these are sometimes 

 absent in young specimens, they are almost invariably present in 

 matured forms to a greater or lesser extent. This characteristic 

 has suggested such names as "venosa" and "reticulata" both of 

 which have been used by different authors as a specific name for 

 the same species. 



In the herbarium of the New York Botanical Garden are a 

 number of specimens of this species collected at Farmington, New 

 York, by Edgar Brown in May and June, 1890. The largest 

 specimen in this collection was said to measure twelve inches in 

 diameter, while many of them were five to seven inches. These 

 plants were erroneously referred by Mr. Ellis to Peziza perlata 

 Fries, a species which closely resembles Peziza venosa in external 

 appearance, although usually not so large. A part of the same 

 material was apparently distributed in North American Fungi 

 2621 under this name. 



The specimens from which the accompanying illustrations were 

 produced were collected by Dr. L. H. Pennington near Syracuse, 



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