Murrill: Illustrations of Fungi 



103 



York City. The specimen figured grew on a red maple stump. 

 Stipitate forms also occur and may possibly connect it with 

 Ganoderma lucidum of Europe. 



Tyromyces Spraguei (Berk. & Curt.) Murrill 



Sprague's Tyromyces 



Plate 6. Figure 4. X i 



Pileus subimbricate, dimidiate or flabelliform, broadly sessile 

 or attenuate behind, convex, fleshy-tough and watery to rigid and 

 fragile when dry, 4-7 X 5-10 X 1-2 cm. ; surface at first milk- 

 white, finely tomentose to glabrous, slightly tuberculose, azonate, 

 sodden, containing depressions filled with exuded water, becom- 

 ing discolored and roughened and often decaying, especially in 

 damp weather, with a strong and disagreeable odor ; margin undu- 

 late or slightly lobed, acute, usually discolored, sometimes smoky- 

 black, inflexed when dry ; context white, zonate, cheesy when 

 fresh, rigid and somewhat fragile when dry ; tubes small, white 

 to yellowish within, 3-8 mm. long, mouths somewhat uneven, 

 angular, 3-4 to a mm., edges white to yellowish, thin, entire ; 

 spores ellipsoid, smooth, hyaline, 6X4ft. 



Common in the eastern United States on decaying stumps and 

 trunks of chestnut and oak. The specimen figured was taken 

 from a white oak tree in the New York Botanical Garden. 



New York Botanical Garden. 



