100 THE AGARICACEAE CF MICHIGAN 



72. Lactarius hysginus Fr. 



Syst. Myc, 1821. 



Illustrations : Fries, Icones, PL 169, Fig. 2. 

 Cooke, 111., PL 989. 

 Ricken, Blatterpilze, PL 12, Fig. 4. 



"PILEUS 5-7.5 cm. broad, rigid, convex, then plane, umbilicate or 

 slightly depressed, even, viscid, obscurely zonate or azonate, red- 

 dish-incarnate, tan-color or brownish-red, becoming paler with age. 

 the thin margin involute, GILLS adnate-subdecurrent, close, whit- 

 ish, becoming yellowish or cream-colored. STEM 2-5 cm. long, 6-15 

 mm. thick, equal, glabrous, stuffed or hollow, colored like the pileus 

 or a little paler, sometimes spotted. SPORES subglobose, whitish 

 or yellowish, 9-10 inicr. MILK white, acrid." 



On the ground, mixed woods. Houghton. July. 



This was found only in the locality mentioned. The description 

 is that of Peck, with which the fresh plants agreed, except that the 

 gills were almost subdistant. The pileus was obscurely zonate. 

 It was found several times, always solitary. 



73. Lactarius trivialis Fr. (Suspected) 



Syst. Myc, 1821. 



Illustrations: Cooke, 111., PL 976. 



Hard, Mushrooms, Fig. 131, p. 170, 190S. 



PILEUS 5-15 cm. broad, convex, soon nearly plane and depressed, 

 glabrous, viscid, azonate, color varable, livid-gray to smoky-gray 

 or with a lilac-purplish tint, lead-colored or pinkish-brown, margin 

 soon arched, at first pruinose, thin. FLESH thickish, rigid-fragile, 

 pallid. GILLS adnate-subdecurrent, close, thin, moderately broad 

 or rather narrow, some forked, cream-yellowish, becoming dingy- 

 greenish stained when bruised or in age. STEM 4-12 cm. long, 1-2 

 cm. thick, equal, or irregularly undulate, glabrous, even, not spotted, 

 stuffed then hollow, firm, concolor or paler than pileus, often pallid. 

 SPORES elliptical, echinulate, 8-10 micr., yellowish. MILK white 

 or creamy-white, unchangeable, acrid. Suspected. 



Gregarious, subcaespitose or scattered. On the ground in fron- 

 dose and coniferous woods. 



Throughout the state, from the southern limits to Isle Royale. 

 Jutv-October. Common. 



