88 ELEVENTH REPORT. 



plane or slightly and unibilicately depressed glabrous even or slightly 

 striate on the margin, the thin pellicle separable, dark red or crimson, 

 usually darker or brownish in the centre, scarcely viscid. Flesh white. 

 Gills broad, subventricose, subdistant or moderately close, adnate or 

 slightly rounded behind, white becoming yellowish-ochraceous or ochrace- 

 ous-buff with age. Stem 1-2 cm. long, 4-6 mm. thick, relatively stout, solid 

 or spongy within, soft, short, white. Spores globose, slightly tinged xcith 

 yellow, 7.5 niicr. 



RejDorted only once from Michigan. They are said to grow on the bare 

 ground or among short grass under pine trees. The coloring matter of the 

 jiileus produces red stains on wet paper, or colors water in which they are 

 washed. It is the smallest Russula in this country. July to October, 

 Edible. The description and notes are from Peck's account. 



|o3. Russula flava Rom. (Syn. R. constans. Karst.) ^ 

 (The light-yellow Russula.) 



PiLEUS 5-8 cm. liroad, rather fragile, convex, then piano-depressed, even 

 or slightly stricde in age, dry in dry weather, somewhat viscid when moist, 

 jiellicle separable, dull yelloiv (flavus Sacc), color hardly fading, but some- 

 times ashy discolored in age. Flesh white becoming cinereous with age. 

 Gills white at first, becoming yellowish, broadest towards front, narrowly 

 adnate, close, distinct, becoming slowly gray in age. Stem chalk-white at 

 first, the flesh becoming ashy, ec^ual or subequal, spongy-stuffed, obscurely 

 reticulate-rivulose, rather fragile, 6-8 cm. long, 1-2 cm. thick. Spores 

 yellowish, globose, echinulate, 8-9 micr. Taste mild. Odor none. 



Solitary or scattered. In coniferous or mixed woods of northern ]\Iich- 

 igan. July, August and September. Frecjuent. 



This mild, dull or pale yellow, rather large Russula, with flesh, gills and 

 stem becoming ashy when old, is quite easily recognized. The name R. 

 flava is more appropriate than R. constans used by Peck. Romell dropped the 

 latter name, because, according to Britzelmayr who first used the name R. 

 constans, his plant is not the same as Karsten's, but Karsten's plant occurs 

 in Sweden, and so had to be renamed. Our plant is the same as the Swedish 

 one, hence the name R. flaiHi. It differs from R. ochroleuca Fr. in the mild 

 taste and unpohshed pileus, etc. R. ochracea is described with a shining, 

 sulcate pileus and flesh ochraceous thruout. R flava was reported as \R de- 

 colorans Fr. var. constans Karst. in the eighth Michigan Academy Report. 



54. Russula decolorans. Fr. 

 (The discolored Russula.) 



Pileus 5-10 cm. broad, often large, firm, globose at first then piano-depressed 

 orange-red, usually ochre on disk and dark red on margin, pellicle separable, 

 subviscid, margin even, slightly striate in age. Flesh white becoming ciner- 

 eous with age or where broken, becoming fragile. Gills pale yellowish- 

 ochraceous at maturity, white at first, thin, fragile, moderately broad, close, 

 adnexed, forked at base, few short. Stem stout, long, spongy or solid, 

 wrinkled ri\adose, white, the flesh becoming cinerous with age or where 

 bruised. Spores subglobose, echinulate, pale ochraceous-yellow, 7-9 micr. 

 Taste mild. Odor none. 



Solitary or scattered. In coniferous or mixed woods of northern Michigan, 

 July, August and September. Frecjuent. 



