X. A FURTHER OCCURRENCE OF WYNNEA AMERI- 

 CANA IN PENNSYLVANIA. 



By Otto E. Jennings. 

 (Plate LVI.) 



The rare fungus, Wynne a americana, was first described by Thaxter 

 in 1905 l from specimens collected by himself, in 1888, at Burbank, 

 Tennessee, and at the same place and on the North Carolina moun- 

 tains at Cranberry, in 1896. A specimen is also mentioned collected 

 by Mr. E. Wilkinson at Mansfield, Ohio. 



In September, 1906, Mrs. Jennings and myself found a few speci- 

 mens of this species at Ohio Pyle, Fayette County, in southern Penn- 

 sylvania, as noted and described by Sumstine in the Journal of Mycol- 

 ogy. 2 In early September, 1907, Mrs. Jennings and myself found 

 the fungus growing quite abundantly along the lower slopes of the 

 deep wooded valley of Meadow Run, four miles south of Ohio Pyle, 

 and on September 8, 1907, a few specimens were found by Dr. T. D. 

 Davis, Prof. D. R. Sumstine, and the writer on the estate of Mr. James 

 R. Mellon, on the Laurel Hill Mountains of northeastern Westmore- 

 land County, near New Florence. 



The Ohio Pyle and New Florence specimens were both found in 

 shaded soil derived from sandstone formations rich in humus, and in 

 both places were near the bottom of the slope where the soil is con- 

 stantly moist. The aerial portion of the fungus, resembling a rabbit's 

 ear, varied from a purplish red, when young, to a dark velvety brown, 

 when old. The underground portion consisted of a very irregularly 

 lobed, tuber-like body, always comparatively large and much heavier 

 than the aerial portion. This tuber-like sclerotium was tough and 

 cartilaginous ar.d usually presented the appearance of a perennial 



'Thaxter, Roland. A New Species of Wynnea. Contr. Crypt. Lab. Harvard 

 Univ. LX. Bot. Gaz. 3g : 241-247. April, 1905. 



2 Sumstine, D. R. Note on Wynnea americana. Jour. Mycol. 12 : 59. March, 

 1906. 



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