1918^ The Lactarias of N^orth Carolina 25 



This plant has a strong acrid odor like that of some beetles, much 

 stronger than in L. tlieiogalus or L. acris or L. insulsus. In drying, 

 the gills become a pallid-buff, and there is a distinctly lighter zone at 

 the top of the stem where the pinkish-white collar has faded. It also 

 differs from L. insulsus in its slimy, zoneless cap, pink collar on stem, 

 and acrid odor. Also in L. insulsus the color of the dry gills is very 

 different — a deep brownish-red with a distinct overcolor of old gold. 

 From L. hysgenus it differs in its color, pink-collared stem, and acrid 

 odor. It resembles L. agglutinatus in its somewhat rugose cap, and 

 strong odor, but it differs from it in much deeper color, pink ring on 

 stem, and more acrid odor, different color of gills in the dried plant, 

 and absence of the squamulose appearance of the dried cap. 



It is also near L. affinis Pk., but neither Peck nor Miss Burlingham 

 mention the strong odor or pinkish collar on stem, and the spores are 

 smaller and darker and the color of the cap deeper than they give for 

 that species. 



1851. On ground in edge of woods south of South Building, September 21, 

 1915. Photo. Type. 



1842. Mixed woods east of cemetery, September 20, 1915. This was exactly 

 like 1851 in every particular except that there was no trace of zona- 

 tion on the cap. TTie same light color at top of stem, and gills bent 

 sideways on reaching stem. Spores buffy-yellow (about maize- 

 yellow of Ridgway), spherical, minutely warted, 5.4-7.2^. 



1873. In damp shaded place below Meeting of the Waters. These two plants 

 were exactly like collection 1851. Cap 7 cm. broad, very glutinous, 

 deep reddish-bay color; milk white, unchanging, very acrid; taste 

 and odor strong and pungent like that of some beetles; white collar 

 on stem just below gills; stem cavernous: spores buffy-yellow. 



17. Lactarius mucidus Burl. 



This species has so far been reported only from Vcriiiout and from 

 the mountains of North Carolina. As we have not found it in Chapel 

 Hill, we take the following from ]\[iss l^nrlinglKini (^[ein. T. Ti. C. 

 14:56. 1008) : 



''Pilous fleshy, rather thin, convex uiiibilicatc then plane, at length 

 infundibnlifoi-m, warni-sepia (30.5 t. 2, 3) in the center, putty colonnl 

 (311) to stone colored (312) on the extreme margin, azoinite, very 



