BOLETUS 565 



cracked. St. 4-8 cm. x 6-12 mm., yellow, rose-red in the middle and 

 at the base, becoming blue when rubbed, equal, often attenuated at the 

 base, slightly viscid in wet weather, minutely granular, or pruinose. 

 Tubes yellow, becoming blue when touched, adnate, decurrent by a 

 tooth; orifice of pores fairly large, angular. Flesh yellow, reddish at 

 the base of the st., turning blue when cut especially near the tubes, soft. 

 Spores yellow, or olivaceous, oblong fusiform, 9-10 x 4-5 p,, 1-2- 

 guttulate. Woods, pastures, and roadsides. Aug. Oct. Not un- 

 common, (v.v.) 



1865. B. parasiticus (Bull.) Fr. Boud. Icon. t. 145. 



Parasiticus, parasitic. 



P. 28 cm., dingy yellow, or tawny, and more or less brown, convex, 

 then plane, minutely tomentose, dry, often cracked in a tessellated 

 manner. St. 3-7 x 12 cm., yellow, or paler than the p., equal, at- 

 tenuated at the base, rigid, incurved, slightly fibrillose, apex mealy. 

 Tubes yellow, then vinous, decurrent, short ; orifice of pores compound, 

 of medium size, round or angular. Flesh yellow, often becoming reddish 

 in the st., firm. Spores deep olivaceous, fusiform, 12-15 x 4-5/u., 1- 

 guttulate. Parasitic on Scleroderma aurantium and S. verrucosum. 

 Woods, and heaths. Sept. Oct. Not uncommon, (v.v.) 



1866. B. pruinatus Fr. Pruinatus, covered with hoar-frost. 

 P. 5-6 cm., purplish bay brown, covered with a whitish, or greyish 



bloom, convex, then plane, rigid, dry. St. 510 x -51 '5 cm., variegated 

 yellow and reddish, equal, or ventricose, firm, smooth. Tubes light 

 yellow, adnate; orifice of pores small, slightly angular. Flesh yellow, 

 red under the cuticle of the p., turning bluish and reddish, firm. Spores 

 olivaceous, pip-shaped, 9-10 x 4jn, 1-guttulate. Amongst grass in 

 woods, and parks. Sept. Oct. Uncommon, (v.v.) 



1867. B. pusio Howse, ex B. & Br. Pusio, a little boy. 

 P. reddish buff, hemispherical, pulvinate, pulverulent. St. dull 



yellowish white, white above, becoming blackish, slightly thickened down- 

 wards, plicate, pulverulent. Tubes dull sulphur white. 



1868. B. purpurascens Rostk. Rostk. Bol. t. 8. 



Purpurascens, becoming purple. 



P. 6-16 cm., bay purple, convex, then plane, smooth, dry. St. 3- 

 5 x 1-5-2 cm., deep purple red, firm, attenuated downwards to the 

 rooting base, smooth. Tubes dingy yellow, adnate, 12-15 mm. long, 

 becoming greenish when touched; orifice of pores small. Flesh dirty 

 whitish with darker streaks, reddish under the cuticle of the p., thick, 

 compact. Spores brownish grey, subfusiform, 10 x 5/z. Woods, 

 especially pine. Sept. Oct. Uncommon. 



