MYCOLOGIA 



Vol. II March, 1910 No. 2 



ILLUSTRATIONS OF FUNGI— VI. 



William A. Murrill 



The species represented on the accompanying plate belong 

 chiefly to the Boletaceae, a family of fleshy, pore-bearing fungi 

 containing about seventy-five North American species, distributed 

 in eleven genera. Most of the members of this family are edible, 

 but, owing to the difliculty of distinguishing the few inedible 

 species, they should be selected with the greatest care when col- 

 lected for the table. 



Tricholoma personatum (Fries) Quel. 

 Masked Tricholoma. Blewits 



Plate 19. Figure i. X i 



Pileus thick, firm, convex to expanded, 5-12 cm. broad; sur- 

 face moist, glabrous, lilac or purple, fading to grayish, becoming 

 sHghtly brownish on the disk ; margin inrolled and frosted when 

 young, glabrous and often irregular with age ; flesh white, firm, 

 pleasant to the taste ; gills crowded, rounded behind, free or 

 nearly so, violet or lilac, becoming dull-colored with age; spores 

 ellipsoid, smooth, dingy-white, dull pinkish in mass, 7-10 ^u, long; 

 stem short, solid, often bulbous at the base, fibrillose to glabrous, 

 lilac or violet, 3-6 cm. long, 1.5-3 cm. thick. 



This species is of good flavor and not easily confused with 

 dangerous species. It may be found in open woods or among 

 long grass in rich fields during the autumn months. Its large 

 size and the violet or lilac tint of all its parts should distinguish 

 it from most other species. In large, mature specimens, the 

 flesh becomes soft and readily absorbs water during wet weather, 



[Mycologia for January, 1910 (2: 1-42), was issued Jan. i, 1910] 



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