PLUTETJS 59 



101. P. salicinus (Pers.) Fr. Cke. lUus. no. 1157, t. 1169, fig. A. 



Salicinus, pertaining to a willow. 



P. 23 cm., bluish-grey, then cinereous, disc darker, slightly fleshy, 

 convex, then plane, subnmbonate,flocculoso-rugulose. St. 3-5 cm. x 2- 

 6 mm., white-azure-blue, or sometimes becoming green, equal, often 

 thicker at the base, fibrillose, fragile. Gills white, then rose-colour, free, 

 ventricose. Flesh white, tinged with green. Spores pink, elliptical, 

 8-9 x 6-7 fj,, with a large central gutta. "Cystidia on edge inflated 

 clavate, 16 18/A broad, on sides fusoid bottle-shaped, with hooks " 

 Lange. On willow, and alder trunks and branches. Feb. Dec. Not 

 uncommon, (v.v.) 



var. beryllus (Pers.) Fr. ftrjpv\\o<;, a jewel of sea-green colour. 



Differs from the type in the pileus being streaked with green, the 

 ash-coloured rugose disc, and the whitish stem with greenish fibrils. On 

 alder. Sept. Oct. Uncommon, (v.v.) 



var. floccosus Karst. Floccus, a flock of wool. 



Differs from the type in the floccosely squamulose pileus. Rare. 



102. P. hispidulus Fr. Fr. Icon. t. 90, fig. 2. 



Hispidulus, somewhat hairy. 



P. 1-2 cm., grey, thin, convex, then plane, obtuse, silky, or slightly 

 pilose; margin at length slightly striate. St. 3-4 cm. x 2-4 mm., 

 silvery white, equal, fragile, curved-ascending. Gills white, then rose 

 colour, free, broadest in front. Flesh white, grey under the pellicle of 

 the pileus. Spores pink, globose, 6-7 p. "Cystidia inflated-club- 

 shaped, 13-16/u, broad " Lange. On beech stumps, and rotten wood. 

 Sept. Oct. Uncommon, (v.v.) 



103. P. peffltus (Pers.) Fr. Quel. Jur. et Vosg. t. 5, fig. 4. 



Pellitus, covered with skins. 



Entirely white. P. 2-5 cm., fleshy, convex, then plane, sub- 

 umbonate, silky. St. 4-5 cm. x 4-6 mm., equal, slightly thickened 

 at the base, shining, fragile. Gills white, then flesh colour, free, rounded 

 behind, crowded, ventricose, margin slightly toothed. Flesh white, 

 soft, thin. Spores pink, "broadly ovate, 6-7 x 4-5 //,. Cystidia on 

 sides, subfusoid with hooks, on edge, inflated obtuse" Lange. On 

 and near trunks. July Sept. Uncommon. 



var. punctillifer Quel. Punctillum, a little dot;fero, I bear.-* 



Differs from the type in the disc of the pileus being tinged fuscous 

 and covered with minute umber scales, and in the base of the stem being 

 covered with minute umber scales. Spores pink, globose, 6ft, 1-3-guttu- 

 late. On the ground. Oct. Uncommon, (v.v.) 



