318 POLYPORACE^E Boletus 



is dotted with their orifices or pores, easily separating from the 

 hymenophore and from one another ; the mouths of the tubes or 

 pores are round or angular, in the subgenus Gyrodon sinuous or 

 gyroso-plicate ; trama none. Spores usually fusiform, rarely oval or 

 roundish, white, rosy, yellowish or brown. (Fig. 73.) 



Terrestrial, fleshy, putrescent fungi ; mostly edible, a few 

 poisonous. Species 1456 1515 



SUBGENUS i. EUBOLETUS. Pores round or angular, not sinuous or 

 gyroso-plicate. Trama not descending between the tubes. 



14561513 

 EuCHROvE. Tubes usually yellow, not white or grey. 



a. Visdpelles. Stem solid, not bulbous or reticulate, except 



1458. Tubes adnate, decurrent in 1457, 1467 and 1468. 

 Pores rarely sinuate, of one colour. Spores usually yellowish. 



14561468 



b. SubtomentosK. Pileus villous when young, rarely at length 



becoming smooth. Stem not bulbous or reticulate ; here 

 and there rugose or striate. Flesh rarely changing colour. 

 Tubes adnate, of one colour. 1469 1477 



c. Subpruinostz. Pileus pruinose to smooth. Stem equal, even, 



not bulbous or reticulate. Tubes adnate, yellowish. 



14781481 



d. Calopodcs. Stem stout, at first bulbous, reticulate ; reticula- 



tions usually red. 1482 1488 



e. Edules. Stem stout, bulbous, not reticulate or dotted red 



except 1489, 1490, 1491 and 1493. Tubes somewhat free, 

 adnate in 1494. Pores not red. Flesh scarcely changing 

 colour. Taste pleasant. 1489 1497 



f. Luridce. Pileus pulvinate, compact then soft. Stem stout at 



first, curt and bulbous, then elongate and clavate to nearly 

 equal, somewhat reticulate or dotted. Tubes rounded-free. 

 Pores red to red-brown. Flesh juicy. Suspected poisonous. 

 Growing chiefly in woods of deciduous trees. 1498 1500 

 TEPHROLEUC^E. Tubes at first white or grey. 



g. Favosce. Tubes large, angular, unequal, often shortened 



near the stem, adnate, not rounded-free. Spores brown. 



15011504 



h. Versipellcs. Tubes free, ventricose. Pores minute, round, 



equal. Spores ferruginous. 1505 1508 



i. Hyporhodia;.. Tubes whitish to pale salmon. Spores rosy to 



white flesh-colour. 1509, 1510 



j. Cariosce. Stem not reticulate, stuffed to hollow. Tubes 



white to light yellowish. Pores minute, round. Spores 



white. 15111513 



SUBGENUS 2. GYRODON. Tubes short, somewhat adnate. Pores sinuous 



or gyroso-plicate. 1514, 1515 



