MYCOLOGIA 



Vol. I January, 1909 No. 1 



ILLUSTRATIONS OF FUNGI— I 



William A. Murrill 



Each number of this journal will contain a plate representing 

 certain species of fungi in their natural colors. The photographic 

 work for these illustrations is being done by Mr. F. C. Berte and 

 the color work by Mr. E. C. Volkert. Technical descriptions and 

 notes of interest will accompany each plate. 



Hypholoma perplexum (Peck) Sacc. 

 Perplexing Hypholoma 



Plate 1. Figure 1. X § 



Pileus 5-8 cm., convex to nearly plane, smooth, glabrous, dry, 

 slightly umbonate at times, latericeous to bay, the margin cream- 

 colored to ochraceous ; flesh of mild flavor, white or nearly so, 

 becoming yellowish with age; gills adnate, somewhat rounded, 

 sometimes slightly decurrent, thin, narrow, crowded, pale yellow, 

 becoming greenish, and finally purplish-brown from the ripening 

 spores, which are ellipsoid, smooth, purplish-brown, 7-8 X 4 p ; 

 stipe 6-10 cm. long, 5-7 mm. thick, subequal, firm, hollow, slightly 

 fibrillose, stramineous above, ochraceous or reddish below, orna- 

 mented with an arachnoid ring when young, which becomes con- 

 spicuous by reason of the spores which collect upon it. 



This species occurs abundantly on stumps and roots of decidu- 

 ous trees in autumn, appearing in conspicuous reddish clusters of 

 considerable size. It is edible, but not very good in quality, being- 

 useful because of its very late appearance. Peck separated it in 

 1872 from H. sublateritium chiefly because it lacked the bitter 

 taste ascribed to that species, of which it may be only a form. 



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