GYBODON. BOLETUS 557 



1837. G. caespitosus Massee. Caespes, a clump. 

 P. 2-5-5 cm., olivaceous umber, becoming paler towards the margin, 



hemispherical, dry, tomentose; margin pale pink, wavy, acute. St. 

 4-8 x 2-3 cm., yellow, dingy red at the base, connate, ventricose, 

 glabrous. Tubes yellow, subadnate, 1 mm. long; orifice of pores yellow, 

 very irregular, elongate, sinuous. Flesh yellow, instantly changing to 

 intense blue, then fading to a dirty white, and finally rufous, dingy red 

 at the base of the St., thick, firm. Spores pale olive, narrowly elliptical, 

 12 x 4jit. Densely fasciculate. Under trees amongst grass. Aug. 

 Bare. 



1838. G. sistotrema Fr. o-eierro?, shaking; rpr}fj,a, a hole. 

 P. 6-8 cm., reddish, or brownish olive, convex, then flattened, gla- 

 brous, or minutely pubescent, thin, dry. St. 5-7 x 1 cm., pale lemon 

 yellow, becoming reddish, equal, or enlarged below, smooth. Tubes 

 yellow tawny, or pale sulphur, adnate, very short; orifice of pores 

 yellow, becoming tawny, sinuous, round, becoming gyroso-plicate. Flesh 

 cream colour, tawny under the cuticle of the p., firm. Spores "cream- 

 olive, elliptic cylindrical, 10-14/A long, guttulate " Quel. Taste some- 

 what sharp. Coniferous woods. Aug. Oct. Rare. 



var. brachyporus (W. G. Sm.) Rea. ftpaxvs, small; jropos, pore. 

 Differs from the type in the white p., the white st. sulphur coloured 

 below, and in the flesh changing to pale green. 



1839. G. rabellus McWeeney. Rubellus, reddish. 

 P. 1-1-5 cm., red, with a tinge of purple at the disc, becoming yellowish 



towards the margin, convex, even, smooth, dry. St. 1 cm. x 3 mm., 

 bright yellow, equal, smooth, even. Tubes pale yellow, 1 mm. long; 

 orifice of pores bright yellow, linear, elongate, sinuous, dissepiments 

 thick. Flesh yellow, unchangeable, firm. Spores greenish olive, 

 cylindric fusiform, with a minute basal apiculus, 10 x 4/z. Amongst 

 moss. Oct. Rare. 



Tubes long. 



Boletus (Dill.) Pat. 



(/3<wAo9, a clod.) 



Pileus fleshy, dry, glabrous, tomentose, silky, viscid, or glutinous. 

 Stem central, equal, ventricose, or bulbous ; dry, glabrous, tomentose, 

 or viscid, sometimes reticulate; with or without a ring. Tubes long, 

 adnate, sinuato-adnate, or decurrent, rarely free; orifice of pores 

 round, angular, unequal, or toothed, often compound. Flesh thick, 

 soft, putrescent. Spores ochraceous, ferruginous, olivaceous, or 

 fuscous, rarely colourless, fusiform, oblong-elliptic, elliptical, or pip- 

 shaped, smooth. Cystidia present. Growing on the ground, solitary, 

 gregarious, caespitose, or subcaespitose. 



