470 RUSSULA 



*Flesh becoming black, taste mild or slightly acrid when young. 



1537. R. decolorans Fr. Cke. Illus. no. 1039, t. 1079. 



Decolorans, discolouring. 



P. 5-10 cm., orange-red, then light yellow, and becoming pale, 

 spherical, then expanded and depressed, remarkably regular, fleshy, 

 viscid; margin thin, at length striate. St. 6-10 x 1-2 cm., white, be- 

 coming cinereous, cylindrical, often rugoso- striate. Gills white, then 

 yellowish, adnexed, often in pairs, thin, crowded, fragile. Flesh white, 

 becoming cinereous when broken, especially in the stem, and more or 

 less variegated with black spots when old. Spores ochraceous, elliptical, 

 "11-13 x 8-9 /u," Maire, verrucose, 1-guttulate. Cystidia "sparse, 

 subulate, 50-60 x 6-8 jit" Rick. Taste mild, then slightly acrid. Edible. 

 Coniferous woods, and peat bogs. Aug. Sept. Uncommon. 



**Flesh not becoming black, taste mild, or 

 somewhat acrid when young. 



1538. R. Integra (Linn.) Bataille. Integra, entire. 

 P. 8-12 cm., bay, brown, or olivaceous, becoming pale, convex, then 



plane, fleshy, firm, viscid; margin thin, becoming tuberculately striate. 

 St. 9-10 x 2-3 cm., white, clavate, or ventricose, fragile, wrinkled- 

 striate. Gills white, then mealy and ochraceous cream, free, very broad, 

 connected by veins. Flesh white. Spores ochraceous cream in mass, 

 subglobose, 8-10 x 7-9 /A, echinulate, 1-guttulate. Cystidia "clavate 

 apex obtuse, 50-60 x 10-15/x" Rick. Smell pleasant, taste mild, then 

 slightly acrid. Edible. Coniferous woods. Uncommon, (v.v.) 



1539. R. Romellii Maire. (= Russula olivascens Quel. sec. Maire.) 

 Cke. Illus. no. 1036, 1. 1034, no. 1037, 1. 1093, as Russula integra 

 Linn. ; no. 1038, t. 1094, as Russula integra Linn. var. alba Cke. 



Lars Romell, the eminent Swedish mycologist. 

 P. 8-15 cm., reddish, purple, violet, becoming olivaceous, isabelline, 

 whitish, convex, then plane and more or less depressed, soft, fragile, 

 viscid, disc often streaked with innate fibrils; margin rounded, often 

 striate, rarely tuberculoso-striate. St. 6-9 x 1-5-2 cm., white, pruinose, 

 becoming glabrous, somewhat cylindrical, wrinkled-striate, sometimes 

 distinctly corticate. Gills white, at length light yellow, somewhat 

 ochraceous-pulverulent with the spores, free or somewhat adnate, very 

 broad, equal, somewhat distant, rarely forked, or unequal, more or 

 less connected by veins. Flesh white, rarely slightly violaceous under 

 the cuticle. Spores deep yellow ochre in the mass, yellow under the 

 microscope, elliptical, 7-9 x 6-7 p, marked with anastomosing ridges 

 and spines. Cystidia often with an appendage, 60-90 x 8-10/i. Smell 

 weak, taste pleasant. Deciduous woods. June Nov. Common. 



