282 AGARICACEiE Rus sulci 



white to rosy, red when bruised. Flesh white, reddish when 

 bruised, becoming black. 



Taste mild to slowly acrid. Woods, under trees. Aug.-Sept. 4§X2^x£ in. 



1310. R. semierema Fr. (from the white stem becoming cinereous 



and black when broken ; semi, half, cre?no, to burn) a. White 

 or faintly yellowish. 

 P. convex to depressed, even. St. equal or slightly attenuate 

 upwards. G. decurrent, crowded, thin. Flesh in P. white. 



Taste mild ; odour none. Woods, mixed, amongst leaves. Aug.-Sept. 

 4j X 2J X £ in. 



1311. R. deliea Fr. (from its resembling a milkless 1272 in appear- 



ance ; delicus, weaned) a b c. White or whitish. 

 P. convex to depressed, even, smooth. St. even, smooth. 

 G. decurrent, thin, distant, unequal, exuding small watery 

 drops in wet weather. 



Woods, mixed, usually pine ; uncommon. Sept. -Oct. 5 X 2 x if in. 



1311a. R. ehloroides Bres. (from the greenish-yellow colour of the 

 gills ; Gr. chloros, greenish-yellow, eidos, appearance) a b c. 

 P. fleshy, plane to infundibuliform ; marg. incurved, pubescent, 

 whitish, whitish-buff or livid. St. solid, equal or attenuate 

 downwards, thinly pubescent, whitish. G. decurrent, somewhat 

 crowded, furcate, veined, verdigris-white, greenish-white, or 

 turquoise-white, shaded emerald-green-white. Flesh thick, 

 whitish to snow-white. 

 Acrid. Woods, pine. Aug.-Oct. 4 x *z\ X 1 in. 



1312. R. elephantina Fr. (from Fries thinking, in error, that Bolton's 



obese Agaricus elephanttnus might be one form of this 



comparatively slender species) a b. 

 P. convexo-umbilicate, fuscous-tan ; marg. undulate, paler, dark 

 wash-leather colour when dry. St. hard, even, smooth, paler 

 than P. G. adnate or sinuato-adnate, then subdecurrent, 

 arcuate, somewhat crowded to distant, thin, obtuse, divided 

 behind, unequal in front, spotted pale yellowish when touched, 

 dull pale salmon when dry. 



Odour none. Woods. Sept. 3 x 2J.X 1 in. Habit of 1341, but 

 inodorous. A. elephantimis Bolton {Hist. Fu?ig. t. 28) is undoubtedly 1306, 

 as is shown by the remote gills and the change of colour to black. 



1313. R. mustelina Fr. (from the colour of the pileus : mustela, a 



weasel) a b. 

 P. convex to depressed, opaque yellow-ochre or sienna with 

 yellow to full burnt sienna. St. white, whitish, or faintly 

 shaded yellowish, brownish or salmon. G. adnexed, adnate 

 or rounded, crowded, veined above, somewhat branched. 



Woods. Oct. 3 x 2| X f in. 



