Slippery Jack

Boletus luteus L. Sp. PI. 1177. 1753
Boletus annulaius Pers. Syn. Fung". 503. 1801.
Boletus salmonicolor Frost, Bull. Buffalo Soc. Nat. Sci. 2 : 100. 1874. (Type from Vermont.)
Cricunopus luteus P. Karst. Rev. Myc. 3^ : 16. 1881.
Viscipellis luteus Quel. Ench. Fung. 155. 1886.
Boletus sttbluteus Peck, Bull. N. Y. State Mus. 1^ : 62. 1887. (Type from New York.)
Ixocomus luteus Qu^l. Fl. Myc. Fr. 414. 1888.
Boletus acidus Peck, Bull. N. Y. State Mus. 105 : 15. 1906. (Type from New York.)
Pileus convex, solitary, 5-10 cm. broad; surface smooth, glabrous, very viscid, yellowish-brown, grayish-brown or reddish-brown, sometimes streaked, becoming darker and duller with age ; margin thin, entire or undulate : context compact, pale -yellowish, darker with age, unchanging when wounded, edible; tubes 1.5-2.5 mm. long, plane or convex in mass, adnate or slightly decurrent, somewhat depressed, dark-melleous, unchanging when wounded, darker with age, mouths 1 mm. in diameter, nearly circular, edges adorned with reddish-brown dots : spores oblong-fusiform, smooth, yellowish-brown, 6-9X2-5-4^: stipe slightly tapering downward, pale-yellow to reddish-brown, glandular-dotted both above and below the annulus, solid, yellowish and unchanging within, about 3-6 cm. long, 1-2 cm. thick ; annulus large, membranous, white to slightly brownish, glandular-dotted, persistent.
Type LOCALITY : Sweden.
Habitat : Sandy soil in coniferous or mixed woods.
Distribution : Eastern United States ; also in Europe.