CLASSIFICATION OF AGARICS 129^ 



103. Russula sordida Pk. (Edible) 



:N'. Y. State Mus. Eep. 26, 1874. 



Illustrations: N. Y. State Mus. Bull. 105, IM. !)S. Fig-. 1-3, 1905. 

 Plate XIV of this Report. 



PILEUS 5-12 cm. broad, dry, convex-depressed, margin at first 

 incurved, glabrous, even, d/ingy tvJiite hec&ming smoky with age. 

 FLESH whitish, compact, hecoming hlackisJh-hrown or bluish-hlack 

 when bruised, loithout first turning reddish. GILLS adnate to sub- 

 decurrent, rather narrow, close, long and short alternating, white 

 hecoming blackish in age, few forked. STEM 3-5 cm. long, 1-2 cm. 

 thick, short, solid, rigid, equal, whitish becoming black when 

 handled. SPORES globose, 7-8 micr., white in mass. TASTE mild 

 or tardily and slightly acrid. ODOR none. 



Gregarious or solitary. On the ground in the hemlock regions of 

 the north, rarely in southern Michigan. July-August. Infrequent. 



This differs from the European R. alhonigra (Kromb.) in its dry 

 pileus. A species has been named by Peck with viscid cap, viz., 

 B. stibsordida; this is probably identical with R. alhonigra. Our 

 plant has a dry pileus and differs from R. nigricans and R. densi- 

 folia in the lack of the change to red immediately after bruising. 

 In specimens found near Ann Arbor the gills of the young plants 

 were easily separable from the trama of the pileus; whether this 

 is a constant character I cannot say. Peck found the same to be 

 true in specimens of R. densifolia. The stems are said to be 

 often infested with grubs. 



104. Russula compacta Frost & Peck (Edible) 



N. Y. State Mus. Rep. 32, 1879. 



Illustration : Peck, N. Y. State Mus. Bull. 116, PI. 109, 1907. 



PILEUS 5-10 cm. broad, firm, convex then depressed to subin- 

 fundibuliform, margin at first incurved, thin, then elevated, dry, 

 unpolished, minutely tomentose in age, even, whitish when young, 

 at length sordid-pale-reddish or rusty^ochraceous either wholly or 

 in spots. FI!ESH thick, compact, rather brittle, white, changing 

 to reddish in age or when wounded. GILLS narrowly adnate, close, 

 rather narrow, alternately short and long, sometimes much forked 

 toward base, sometimes few forked, white at first, then stained 



