104 



30. Boletus Koxanae, u. sp. 



Pileus flat convex, yellowish brown, fasciculated rod pilose, subtomentose 

 wlien young. Tubes at first wbitisli, then light yellow, not large, falling away 

 around the stem, or arcuate adnata. Stem light cinnamon or weak gamboge 

 color, striate at apex, thickened downwards, and subtuberous. Flesh yellowish 

 white, just tinged. ISporcs .0105-.0042 m. m. 



Borders of woods. August and September. 



31. Boletus Russellii, n. sp. 



Pileus pulvinate if expanded, otherwise thick hemispherical, fasciculate red 

 pilose on a yellow ground, 2 to 4 inches broad. Titbes dirty yellow or yellow- 

 ish green, rather large, nearly adnate, often depressed around the stem. Stem 

 very long 3 to 6 inches in most specimens, small at apex, increasing down- 

 wards, red, rough with the margins of a sharp network of alveolate depres- 

 sions and in some measure from the breaking up of the epidermis. Flesh 

 yellowish, unchanging. Spores .0147-.0084 m. m. 



In rocky woods. July. 



32. Boletus retipes, B. & C. 33. Boletus allinis, Peck. 



34. Boletus edulis, Bull. 



35. Boletus limatulus, n. sp. 



Pileus nearly flat, thin, smooth, of a rich yellowish brown, viscid when moist, 

 somewhat polished and shining when dry, 1 to 2}^ inches broad. Tubes color 

 as pileus, greenish yellow inside, falling away around the stem. Stem not 

 large, subtuberous, color as pileus. Flesh when cut reddish in pileus darker 

 in stem. Spores .0147-.0047 m. m. 



In woods. June and July 



36. Boletus robustus, n. sp. 



Pileus at first globose, then pulvinate, large, 3 to 10 inches broad and 1 to IJ^ 

 inches thick, chocolate color, fleshy, and so svicculent that it is difiicult to dry 

 and preserve. Tubes long, perhaps of a lighter color than pileus, when young 

 and in fresh specimens with a purple tinge, especially near the margin. Stem 

 robust, reddish chocolate, very minutely scurfy, even, tapering suddenly at 

 base. Flesh reddish white. Spores .0147-.0084 m. m. 



In woods and thickets. July and August. 



37. Boletus gracilis, PecA;. 38. Boletus piperatus, i>«^?. 



39. Boletus ferrug'iiieus, n. sp.' 



Pileus pulvinate, soft, dark reddish brown, subtomentose, 3 to 6 inches broad. 

 Tubes at first dirty white, mouths brownish l)y the spores, generally adnate. 

 Stem dark brown, short, reticulated, often slightly tuberous. Flesli perfectly 

 white, unchanging. Spores .0115-.00G3 m. m. 



Borders of Avoods under trees. September. 



