CLASSIFICATION OF AGARICS 165 



teristic, translucent, light-yellowish color. Several varieties occur 

 in Michigan differing mainly from the above description in the red 

 caps and non-lutescent stems; these are referred here for the pres- 

 ent. 



148. Russula sphagnophila Kauff. 



Mich.. Acad. Sci. Rep. 11, p. 86, 1909. 



PILEUS 2-4.5 cm. broad, very fragile, convex, umhonate, margin 

 at length elevated and disk depressed and purplish-red or rosy-red, 

 the space between the umbo and the margin pale olive-brown, cov- 

 ered by a viscous pellicle, glabrous, margin slightly striate. FLESH" 

 reddish under the cuticle and under the surface of the stem fragile. 

 GILLS white then pale ochraceous, narrow, adnato-decurrent, 

 rather close, narrowed toward both ends, few forked here and there. 

 STEM rosy-colored, usually ventricose or irregularly swollen, 

 spon^-stuffed then cavernous, very fragile, rivulose-uneven, 4-5 cm. 

 long, 7-12 mm. thick. SPORES cream-color, globose, echinulate, 6-7 

 micr. TASTE mild. 



Scattered. On sphagnum, in swamps. Cold Spring Harbor. 

 August and September. Rare. 



Whole plant very fragile, always with an umbo, subpellucid and 

 rosy stem, and pale gills. The only other Russula with an umbo, 

 known to me, is R. caendea Pers. which differs in color and hab- 

 itat. The red color rubs off on paper when moist. In some points 

 it is near R. roseipes, in others it is nearest R. puellaris, and might 

 perhaps be referred to the latter as a variety but without settling 

 anything as to its origin. 



- 149. Russula chamseleontina Fr. (Edible) 



Epicrisis, 1836-38. 



Illustrations : Cooke, 111., PL 1908. 



Gillet, Champignons de France, No. 600. 

 Ricken, Blatterpilze, PI. 18, Fig. 2. 



PILEUS 2-5 cm. broad, rather small, fragile, thin, piano-depressed, 

 with a viscid separable pellicle, margin even at first then striatulate, 

 color varying for different pilei, mostly some shade of red, purple, 

 etc.. fading to yellowish especially on disk. FLESH white, thin. 

 GILLS thin, crowded or close, adnexed or almost free, equal, rather 

 broad, sometimes almost narrow, few forked, interspaces venose, 



