108 THE AGARICACEAE OF MICHIGAN 



and rather large size as compared with others of the same color. 

 Peck has segregated a species on the lack of the umbo, the hollow 

 stem and scanty milk; it is edible. This he named L. boughtoni 

 Pk. (see N. Y. State Mus. Bull. 150, p. 32, and PI. 6, Fig. 1-7). It 

 seems to be an extreme form of L. rufus and may be referred to as 

 var. boughtoni Pk. Longyear has reported L. rufus from a swamp 

 near Lansing where it occurred in large numbers. I have seen it 

 only in the Adirondack Mountains, New York. 



83. Lactarius griseus Pk. 

 N. Y. State Cab. Kep. 23, 1872. 



Illustrations: Burlingham, Torr. Bot. Club, Mem. 14, Fig. 14. 

 p. 18, 1908. 



Hard, Mushrooms, Fig. 138, p. 174, 1908. 



PILETJS 1-4 cm. broad, soon flaccid, convex then depressed to in- 

 fundibuliform, papillate, dry. azonate, minutely tomentose, becom- 

 ing floccose, grayish or brownish-gray, variegated smoky-gray, mar- 

 gin at first incurved. FLESH white, tMn. GILLS adnate-decur- 

 rent, close to subdistant, pruinose, broader than the thickness of the 

 pileus, white then cream-colored to honey -yellow. STEM 1-5 cm. 

 long, 2-5 mm. thick, equal, dry, glabrous, stuffed then hollow, whit- 

 ish to grayish. SPORES broadly elliptical to subglobose, 8-9x6-7 

 niicr., echinulate. white. MILK white, unchanging, slowly acrid. 



Gregarious or scattered. On the ground or on much decayed logs 

 in woods of the coniferous regions of the state. Marquette, Hough- 

 ton, Huron Mountains, Sault Ste. Marie, Bay View, New Richmond. 



Distinguished by its small size, gray color and tomentose-floc- 

 culose cap. It differs from L. rinereus in its dry, non-glabrous 

 pileus and in the gills becoming cream-yellow in color. It seems to 

 be limited to regions with conifer trees, although it is also found in 

 frondose woods of such res-ions. 



't< j 



Section VI. Pileus glabrous, viscid; taste acrid. . 



84. Lactarius cinereus Pk. 

 N. Y. State Mus. Rep. 24, 1872. 



Illustrations: Burlingham, Torr. Bot. Club. Bull. 14, Fig. 11, 

 p. 67, 1908. 



Hard, Mushrooms, Fig. 137, p. 173. 1908. 



