462 RUSSULA 



1512. R. serotina Quel. Cke. lUus. no. 1003, t. 1042, lower figs. 



Serotina, late. 



P. 2-3 cm., violet, lilac, bistre, or olivaceous, margin lilac with the 

 extreme edge white, globose, then plane, white pruinose at first. St. 

 2-3 cm. x 3-4 mm., white, minutely pubescent, equal. Gills white, 

 then tinged yellowish, adnate, crowded. Flesh white. Spores pale 

 ochraceous, globose, 7/x, echinulate. Taste acrid. Beech woods, and 

 on old willow, and poplar stumps. Aug. Sept. Uncommon, (v.v.) 



III. Pellicle of the pileus viscid, separable at the margin and possess- 

 ing cystidia. Margin subacute, rarely striate in old age. Flesh 

 firm. Taste mild. Gills attenuated in front, often forked and un- 

 equal. Spores verrucose, small, white in the mass. 



1513. R. cyanoxantha (Schaeff.) Fr. Cke. Illus. no. 1007, t. 1076. 



Kvavos, blue; ai>66<>, yellow. 



P. 5-15 cm., lilac, or purplish, then olivaceous green, disc commonly 

 becoming pale, often yellowish, margin commonly becoming azure-blue, 

 or livid-purple, convex, then plane and depressed, or infundibuliform, 

 viscid, sometimes wrinkled, or streaked. St. 5-9 x 2-3 cm., white, 

 rarely tinged with lilac, elastic, equal. Gills shining white, rounded be- 

 hind, connected by veins, forked, broad, not much crowded. Flesh 

 white, purple or reddish under the pellicle. Spores white, globose, 

 7-10/u,, verrucose. Cystidia abundant, conical, 70-80 x 7-8//,. Taste 

 pleasant. Edible. June Nov. Common, (v.v.) 



1514. R. fflacea Quel. Cke. Illus. no. 1004, t. 1054. 



Lilacea, lilac-coloured. 



P. 4-8 cm., violet, or lilac, often brownish, margin becoming whitish, 

 convex, then depressed, thin, viscid ; margin striate, thin. St. 4-6 x 

 1-5-2 cm., white, often rosy at the base, corticate, fragile, apex pruinose, 

 wrinkled-striate. Gills white, free, ventricose, connected by veins, 

 often forked. Flesh white, violet under the pellicle. Spores white, sub- 

 globose, 8-9 fj,, verrucose. Smell pleasant, of apple. Taste mild. 

 Edible. Aug. Sept. Uncommon, (v.v.) 



1515. R. citrina Gillet. Cke. Illus. no. 1031, t. 1078. 



Citrina, lemon yellow. 



P. 5-10 cm., bright citron yellow, colour usually uniform, sometimes 

 paler at the margin, occasionally with a greenish tint, disc at length be- 

 coming pale ochraceous, convex, then more or less depressed in the 

 centre, slightly viscid, pellicle separable; margin thin, becoming 

 tuberculosely striate with age. St. 5-8 x 1-1-5 cm., white, equal, or 

 slightly attenuated at the base, striate. Gills white, slightly decurrent, 

 forked at the base, and sometimes also near the middle, attenuated 

 at both ends. Flesh white. Spores white, globose, 7-8/n, verrucose. 



