BOLETUS 569 



yellow, sinuato-free, fairly long; orifice of pores yellow, round. Flesh 

 yellow, either unchangeable, or becoming greenish, at length becoming 

 reddish, especially at the base of the st. and under the cuticle. Spores 

 dark olivaceous, oblong-fusiform, 10-11 x 4-5 /JL, 2-3-guttulate. Taste 

 mild, smell pleasant. Edible. Woods, and under oaks. Sept. Oct. 

 Uncommon, (v.v.) 



1880. B. rubiginosus Fr. Rubiginosus, rusty. 

 P. 5-12-5 cm., reddish brown, pulvinate, or convex, soft, pubescent, 



soon becoming very glabrous, dry; margin acutely incurved, then 

 patent. St. 5-8 x 2-5-3 cm., whitish, then yellowish, becoming slightly 

 greyish or yellowish olive when bruised, attenuated upwards, gla- 

 brous, very distinctly reticulated. Tubes white, adnate, short; orifice of 

 pores white, angular, unequal. Flesh white, unchangeable, thick, 

 spongy. Spores "colourless, elongato-fusiform, 12 x 4/z" Massee. 

 Beech woods. Sept. Oct. Rare. 



ffFlesh generally yellow, changing colour on exposure to the air, often 

 immediately turning bluish, or greenish, sometimes poisonous, or 

 bitter. Pores more or less yellowish, yellow, orange, or red, im- 

 mediately tinged blue, green or black when touched. St. reticulately 

 veined, or punctate, rarely smooth, generally red, at least in part. 



*Pores at first cream, lemon yellow, or yellow, rarely finally becoming 

 reddish. St. reticulate with white, or yellow veins, sometimes flesh 

 colour or punctate on the veins. Flesh often bitter. 



1881. B. appendiculatus (Schaefi.) Fr. Rostk. Bol. t. 26, as Boletus 

 radicans Pers. Appendiculatus, with a small appendage. 



P. 5-15 cm., brown, bright bay, or fuscous brick colour, convex, 

 pulvinate, then expanded, subtomentose. St. 6-9 x 2-5 cm., sulphur 

 yellow, ventricose, rooting, apex minutely reticulate with white veins, 

 often tinged rosy towards the base. Tubes sulphur yellow, becoming 

 greenish when touched, adnate; orifice of pores round, small. Flesh 

 yellow, becoming blue on exposure to the air, tinged with rose at the base 

 of the st., compact, firm. Spores light yellow, oblong elliptic, 9-11 x 

 4jit, 1-3-guttulate. Smell and taste pleasant. Edible. Woods. Aug. 

 Oct. Uncommon, (v.v.) 



1882. B. variecolor B. & Br. B. & Br. no. 1020, t. 13, fig. 3. 



Variecolor, with diverse colours. 



P. 4-6 cm., olivaceous, convex, subtomentose; margin involute. St. 

 5-8 x 2 cm., yellowish downwards, rufescent and delicately pubescent 

 upwards, bulbous, attenuated upwards, apex reticulated. Tubes 

 yellow, free ; orifice of pores minute. Flesh pale, here and there inclining 

 to yellow and partially marbled, dark purple under the cuticle of the p. 



