12 Journal of the Mitchell Society \_June 



5. Lactarius AUardii n. sp. 



Plates 6, 7, and 40. 



Cap up to 17 cm. broad, azonate, deeply infundibuliform, the 

 margin strongly inrolled nntil maturity, then nearly plane or up- 

 lifted, uneven, wavy, and often deeply lobed and distorted, surface 

 quite dry, minutely velvety, not distinctly tomentose as in L. vellereus, 

 color reddish cinnamon or pinkish-buff, often lighter towards the 

 margin, sometimes with whitish areas where covered with leaves; 

 when quite young the margin is white, then pinkish-buff or cinnamon. 

 Flesh firm, thick, coarse, dry, rather brittle, about 1 cm. thick in 

 middle, white, but slowly turning to pink with a faint lavender tint 

 when cut. In young plants, where the milk appears on cutting, the 

 pinkish tinge is followed after some minutes by an olive color ; odor- 

 less until old age, then with a somewhat sweetish smell. Milk sticky, 

 tardily but decidedly acrid, sparce, white at first then passing through 

 the same colors as the cut gills. 



Gills moderately close to rather distant when young, becoming sub- 

 distant to distant at maturity, from 1.5-3 mm. apart, nearly equal the 

 whole length, about 2-4 mm. wide, attached to stem and only slightly 

 decurrent, strongly veined at cap, more or less branched and some- 

 times anastomosing, many short ones, color when very young white, 

 then a distinct cream, not dark with age, tinted here and there with 

 pinkish-lavender; when wounded turning slowly to a distinct dull 

 green, then to olive, and after a long time to deep reddish-brown or 

 smoky-brown, and finally blackish-brown. 



Stem short and thick, about 3-4 cm. long and 2.5-3 cm. thick, taper- 

 ing downward, surface texture like that of cap, minutely velvety 

 tomentose (scarcely more than pruinose) ; color pure white when 

 quite young, then whitish or brownish below and pinkish-lavender or 

 pinkish-buff above, or cinnamon-buff and white; texture firm and 

 rather rigid, inside stuffed then cavernous in age. 



Spores (of ISTo. 1670) white, spherical to sub-elliptic, smooth or a 

 few apparently minutely roughened, 6-9 x 7-10/x in diameter. Cys- 

 tidia about 20-3 Sm long, mostly abruptly long pointed. 



