CLASSIFICATION OP AGARICS 133 



wrinkled. SPOKES globose, very minutely rough, 7-9 micr. (incl. 

 apiculus), white in mass. CYSTIDIA very few. BASIDIA about 

 40x9 micr. TASTE tardily and slightly bitterish-acrid or disagree- 

 ably bitter. ODOR faintly aromatic or none. 



Gregarious. On the ground in open oak-maple woods. Ann 

 Arbor. August. Rare. 



Related to R. virescens by its rigidity and the nature of tlie sur- 

 face of the pileus. The surface is pulverulent, somewhat rimose in 

 age, soft to the touch and under the microscope is seen to be com- 

 posed of slender, hyaline, erect cystidia-like hairs. A subhymeu- 

 ium is lacking. It has a short, stout stem and relatively much 

 broader cap. It differs from R. ochraleuca in size and in the thick 

 flesh of the cap, in that the flesh of the stem does not become ashy 

 when bruised, as well as in the bitter taste and the unpolished pileus. 

 R. granulosa Cke. is said to have a granular stem and pileus, and 

 many cystidia in the hymenium according to Massee. It is far from 

 belonging to the Fragiles where Fries placed R. ochraleuca. R. 

 granulata Pk. is said to be tubercular-striate on the margin of the 

 cap and is smaller. The gills are often abundantly forked toward 

 the stem. 



108. Russula lepida Fr. (non Bres.) (Edible) 



Epicrisis, 1836-38. 



Illustrations : Fries, Sverig. Swamp,, PL 59, form minor. 

 Cooke, 111., PI. 1072. 



Gillet, Champignons de France, No. 620. 

 Ricken, Blatterpilze, PI. 16, Fig. 4. 



Hard, Mushrooms, Fig. 149, PL 188, 1908. (Doubtful.) 

 Gibson, Edible Toadstools, etc., PL 12, p. 131, 1903. (Doubt- 

 ful.) 

 Atkinson, Mushrooms. PL 36, Fig. 3, p. 126, 1900. (Doubtful.) 



PILEUS 4-10 cm. broad, rigid, convex, then expanded-depressed, 

 cuticle adnate and disappearing on disk, unpolished, soon dry, rose- 

 red to pale blood-red, fading, disk soon pallid or variegated with 

 paler yellowish-reddish hues, sometimes rimulose-cracked or rugu- 

 lose on disk, margin obtuse, not striate. FLESH compact, white 

 or reddish under the cuticle, thick, abruptly thin on margin. GILLS, 

 narrowed behind and narrowly adnate or almost free, close, rather 

 narrow, broader and rounded in front, tvhite then whitish (albus), 

 few shorter, occasionallv forked. STEM 4-7 cm. long, 1-2 cm. thick, 



