BOLETUS. 297 



Subgen. GYRODON. Ohatowski. 



Pores sinuous or gyroso-plicate, lubes very short, scarcely 

 1 line long, subadnate with the sporophore. 



Boletus (Gyrodon) caespitosus. Mass. (n. sp.) 

 Densely fasciculate, stems more or less connate at the 

 base. Pileus 1-2 in. across, hemispherical, margin usually 

 wavy, acute, disc olivaceous-umber, becoming paler towards 

 the margin, which is pale pink, tomentose, dry ; flesh thick, 

 in. in large specimens, firm, yellow like that of the stem, 

 and instantly changing to intense blue when cut or broken, 

 this colour soon fades to a dirty white, then becomes rufous ; 

 tubes about ^ line long, openings very irregular, elongated, 

 sinuous, yellow ; stem 1^2 in. long, in. thick in the 

 larger specimens, thinner at the extreme apex, even, 

 glabrous, yellow except at the base, which is dingy red, 

 solid, flesh dingy red at the .base ; spores narrowly elliptical, 

 pale olive, 12 x 4 /x. 



Amongst grass under trees. Distinguished by the 

 caespitose habit, 8-12 in a cluster, and the very short tubes 

 with sinuous openings. 



