128 AGARICINI. 



Russula. by veins, pallid-white, at length light yellow, somewhat ochraceous- 

 pulverulent with the spores. 



Taste mild, often astringent. The most changeable of all species, especi- 

 ally in the colour of the pileus which is typically red, but at the same time 

 inclining to azure-blue, bay-brown, olivaceous, c. Sometimes the gills are 

 sterile and remain white. 



In woods, chiefly pine. Common. Aug.-Nov. 



Pileus 7.5-10 cent. (3-4 in.) broad. The white stem and yellow-pulverulent 

 gills distinguish it. Spores ellipsoid-sphasroid or sphaeroid, echinulate, 10x8 

 or 7 x 9 mk. K. ; globose, rough, 8-9 mk. C.B.P. Name integer, whole, en- 

 tire. Perfect in form. Fr. Monogr. ii. p. 199. Hym. Eur. p. 450. Berk. 

 Out. p. 213. C. Hbk. n. 632. S. Mycol. Scot. n. 606. Ag. Schce/. t. 92. 

 Vittad. t. 21. Vent. t. 63. /. 5, 6. Ha'rz. t. 59. Krombh. t. 66. f. 14, 15, and 

 16, 17? Baft. t. 16. C. 



35. R. decolorans Fr. Pileus 7.5 cent. (3 in.) broad, uni- 

 colorous, at first orange-red, then light yellow and becoming 

 pale, fleshy, spherical then expanded and depressed, remarkably 

 regular, viscid when moist, thin and at length striate at the mar- 

 gin ; flesh white, but becoming somewhat cinereous when broken, 

 and more or less variegated with black spots when old. Stem 

 elongated (10 cent., 4 in.) cylindrical, solid, but spongy within, 

 often rugoso - striate, white then becoming cinereous especially 

 within. Gills adnexed, often in pairs, thin, crowded, fragile, 

 white then yellowish. 



Taste mild. Colours changeable according to a fixed rule, but not variable. 

 The gills are not ochraceous-pulverulent as in R. Integra, nor shining and 

 pure yellow as in R. aurata, &c. 



In woods. Uncommon. Aug.-Sept. 



Spores pallid ochraceous Fr. Name de, and coloro, to colour. Changing 

 colour. Fr. Monogr. ii. p. 199. Hym. Eur. p. 451. Berk. Out. p. 214. 

 C. Hbk. n. 633. S. Mycol. Scot. n. 607. 



36. R. aurata Fr. Pileus 5-7.5 cent. (2-3 in.) broad, varying 

 lemon-yellow, orange and red, disc darker, fleshy, rigid, brittle 

 however, hemispherical then plane, disc not depressed, pellicle 

 thin, adnate, viscid in wet weather, margin even, and slightly 

 striate only when old, but sometimes wrinkled ; flesh lemon-yellow 

 under the pellicle, white below. Stem 5-7.5 cent. (2-3 in.) long, 

 solid, firm, but spongy within, cylindrical, obsoletely striate, 

 white or lemon-yellow. Gills rounded free, connected by veins, 

 broad, equal, shining, never pulverulent, whitish inclining to 

 light yellow, but vivid lemo?i-yellow at the edge. 



Taste at first mild, then slightly acrid, odour pleasant. It is among the 

 most beautiful and most easily recognised species by the colours alike of the 

 pileus and of the flesh and gills. 



