Folyporaceee 



tasteless. Tubes ventricose, flesh-colored, becoming darker from the Boletus, 

 spores, the mouths small, angular, slightly fringed. Stem glabrous, 

 tapering upward, pale-yellow. Spores fusiform, subferruginous. 



Pileus 1-2 in. broad. Stem 2 in. long, 6 lines thick. 



Damp pine woods. South Carolina, RaveneL 



The species is compared to Boletus scaber, from which it differs in its 

 smaller tubes and smooth stem, and from both this and B. albellus it 

 differs in the color of the tubes and in the yellowish flocci of the pileus. 

 I have seen no specimens, but on account of the color of the tubes I 

 have placed the species with the Hyporhodii. Peck, Boleti of the U.S. 



B. gracilis Pk. slender. (Plate CXIV, fig. i, p. 414.) Pileus 

 convex, glabrous or minutely tomentose, rarely squamulose, ochraceous- 

 brown, tawny-brown or reddish-brown. Flesh white. Tubes plane or 

 convex, depressed around the stem, nearly free, whitish, becoming pale 

 flesh-colored, their mouths subrotund. Stem long, slender, equal or 

 slightly tapering upward, pruinose or minutely branny, even or marked 

 by slender elevated anastomosing lines which form long narrow reticu- 

 lations. Spores subferruginous, 12.5-17.5x5-6^. 



Var. Ice'vipes. Stem even. 



Pileus 1-2 in. broad. Stem 3-5 in. long, 2-4 lines thick. 



Woods. New York, Peck; New England, Frost; Ohio, Margan. 



The slender habit separates this species from all the others here in- 

 cluded in this tribe. Its spores are not a clear incarnate in color, but 

 incline to dull-ferruginous, and by this character this and the preceding 

 species connect this tribe with Versipelles. In color B. gracilis resem- 

 bles some forms of B. felleus, but in size, habit and color of spores it 

 is easily distinct. The tomentum of the pileus sometimes breaks into 

 tufts or squamules. This is Boletus vinaceus, Frost MS. Peck, Boleti 

 of the U. S. 



B. gracilis, var. laevipes, was found by the writer in Woodland Ceme- 

 tery, West Philadelphia, August, 1897, an d at Mt. Gretna, Pa., Sep- 

 tember, 1898. The stem of some specimens spreads at the top. The 

 pileus is often cracked on the margin, and the upturning of the margin 

 often exposes the tubes. Painting, as of this species, identified by 

 Professor Peck. 



The taste is at first sweet, then bitter. The bitterness is lost in cook- 

 ing. Edible, good. 



467 



