Polyporaceae 



Boletus, the stem, their mouths small, angular, colored like the pileus. Stem 

 subequal, solid, reticulated, concolorous. Spores oblong or sfibfusi- 

 form, I2.5-I4X5//,. Pileus 2.5-5 in. broad. Stem 1.5-3 m - l n g, 6-10 

 lines thick. 



Along road-sides. Alabama. May. Underwood. 

 The species is referable to the section Calopodes, but the tubes are 

 more or less depressed about the stem. Peck, Bull. Torrey Bot. Club, 

 Vol. 23, No. 10. 



EDU'LES edulis, edible. 



Tubes subfree, rounded-depressed around the stem, their mouths not 

 at first reddish, but commonly white-stuffed. Stem stout, bulbous as 

 in the Luridi but not, with a few exceptions, reticulate nor dotted with 

 pointed scales nor red. Flesh scarcely changeable. Taste pleasant. 



This tribe is not sharply limited but partakes to some extent of the 

 characters of Calopodes and Luridi. From the former its nearly free 

 and at first white-stuffed tubes and its generally even stem separate it, 

 from the latter its tubes with concolorous mouths or at least with mouths 

 not red or reddish when young will distinguish it. The species are gen- 

 erally of large or medium size and noted for their esculent qualities. 



Stem brownish-lilac or chocolate color i 



Stem some other color 2 



I . Stem reticulated B. separans 



I. Stem not reticulated, furfuraceous B. eximius 



2. Pileus viscid B. limatulus 



2. Pileus not viscid 3 



3. Tubes yellow with no tinge of green 4 



3.. Tubes tinged with green or becoming green where bruised 6 



4. Pileus whitish B. aestivalis 



4. Pileus not whitish 5 



5 . Stem glabrous B. affinis 



5 . Stem pubescent B. impolitus 



6. Pileus becoming white-spotted where bruised B. leprosus 



6. Pileus not becoming spotted 7 



7. Pileus glabrous B. edulis 



7. Pileus not glabrous 8 



8. Stem reticulated, whitish or pallid B. variipes 



8. Stem even, brownish-red. . . . , B. decorus 



Peck, Boleti of the U. S. 



444 



