Polyporaceee 



edulis. From the former it differs in its reticulated stem, from the Boletus* 

 latter, in its larger tubes and from both in its stratum of tubes being 

 remote from the stem. I have not seen it. Peck, Boleti of the U.S. 



B. Un'derwoodii Pk. Pileus rather thin, convex, becoming nearly 

 plane, slightly velvety, bright brownish-red, becoming paler with age. 

 Flesh yellow, changing to greenish-blue where wounded. Tubes ad- 

 nate or slightly decurrent, greenish-yellow, becoming bluish where 

 wounded, their mouths very small, round, cinnabar red, becoming 

 brownish-orange. Stem equal or slightly tapering upward, somewhat 

 irregular, solid, yellow without and within. Spores 10-1 2x5/4. 



Pileus 2-3 in. broad. Stem 3-4 in. long, 4-6 lines thick. 



Grassy woods. Auburn, Alabama. July. Underwood. 



This species is remarkable for its adnate or subdecurrent tubes, in 

 which it departs from the character of the tribe to which it belongs ac- 

 cording to the colors of the tubes. Peck, Bull. Torrey Bot. Club, 

 Vol. 24, No. 3. 



B. par'vus Pk. parvtis, small. Pileus convex, becoming plane, 

 often slightly umbonate, subtomentose, reddish. Flesh yellowish-white, 

 slowly changing to pinkish where wounded. Tubes nearly plane, ad- 

 nate, their mouths rather large, angular, at first bright red, becoming 

 reddish-brown. Stem equal or slightly thickened below, red. Spores 

 oblong, 12.5x4/1. Pileus 1-2 in. broad. Stem 1-2 in. long, 2-3 lines 

 thick. 



Grassy woods. Auburn, Ala. July. Underwood. Peck, Bull. 

 Torrey Bot. Club, Vol. 24, No. 3. 



VERSIPEL'LES verto, to change; pellis, a skin. 



Tubes at first white or whitish, minute, round, equal, forming a con- 

 vex stratum free from the stem. 



Stem black B. alboater 



Stem some other color I 



I . Stem yellow at the base B. chromapes 



I . Stem not yellow at the base 2 



2. Margin of the pileus appendiculate B. versipellis 



2 . Margin not appendiculate * c 3 



459 



