Parr 3, 1910] BOLETACEAE 135 
40 cm.; surface smooth, glabrous, variable in color, usually some shade of tan or chestnut, 
often pink or purplish when young; margin entire, concolorous: context white, often 
tinged with pink where wounded, at first firm, but soft and yielding in older specimens, 
decidedly bitter, especially when young, sometimes losing its bitter taste with age; tubes 
adnate, depressed, 1-2 cm. long, slender, white, colored at maturity with the flesh-colored 
spores, mouths angular, of medium size, edges thin, entire: spores fusiform, smooth, 
flesh-colored, 8-11 3-4: stipe cylindric, enlarged below, glabrous, subconcolorous, 
usually reticulate above, and sometimes entirely to the base, firm, solid, becoming spongy 
in large specimens, 5-12 cm. long, 1.5-2.5 cm. thick. 
TYPE LOCALITY: France. 
HaBitaTtT: On the ground in woods. 
DISTRIBUTION: Temperate North America and Europe. 
ILLUSTRATIONS : Bull. Conn. Geol. Nat. Hist. Surv. 3: p/. 32; Mecllv. Am. Fungi pl. 122, f. 
2; Atk. Stud. Am, Fungi pl. #9, f. 1; pl. 52; Fries, Sv. Aetl. Svamp. 1. 52; Gill. Champ. Fr. 
pl. 57; Sturm, Deuts. Fl, Pilze 5: p/. 47; Palmer, Mushr. Am. £/.9, 7.1; Gibson, Edible Toadst. 
pl. 24, f. 12; Aun. Rep. N. Y. State Mus. 48: p/. 43, f. 2-7; Bull. Herb. Fr. pl. 379. 
ExsiccaTi: Sydow, Myc. Mar. 2733. 
2. Tylopilus indecisus (Peck) Murrill, Mycologia 1: 15. 1909. 
Boletus indecisus Peck, Ann. Rep. N. Y. State Mus. 41: 76. 1888. 
Pileus thick, convex, 6-12 cm. broad ; surface dry, minutely velvety to glabrous, ochra- 
ceous-brown to chestnut, having no violet tint when young; margin entire or undulate: 
context firm, fleshy, white, unchangeable, except in old specimens, which become slightly 
greenish-yellow near the tubes when wounded, taste mild; tubes adnate, not conspicuously 
depressed, white or grayish-white, becoming flesh-colored from the mature spores, usually 
changing to brownish when wounded, 0.5-1.5 cm. long, mouths small, subcircular: spores 
oblong, smooth, dirty rose-colored, 12-154 : stipe subequal, subconcolorous, usually 
reticulate above, minutely furfuraceous, especially below, firm, solid, 6-10 cm. long, 1-2 cm. 
thick. 
TYPE LOCALITY: Menands, New York. 
HasitTaT: Thin deciduous woods. 
DISTRIBUTION : New York to North Carolina and west to Kentucky. 
ILLUSTRATION: McIlv. Am. Fungi pl. 122, f. 1. 
3. Tylopilus gracilis (Peck) P. Henn. in E. & P. 
Nat. Pfl. 1°**: 190. 1897. 
Boletus gracilis Peck, Ann. Rep. N. Y. State Mus. 24: 78. 1872. 
Pileus convex, 3-6 cm. broad, rarely larger; surface dry, slightly viscid in wet weather, 
subtomentose or squamulose, sometimes rimose or reticulate, dull-tan to reddish-brown: 
context white, unchanging, taste mild, becoming acid ; tubes nearly free, depressed, white, 
becoming deep flesh-colored, not changing when wounded, mouths small, circular: spores 
ellipsoid, smooth, subferruginous, 12-15 >< 5-6: stipe tapering upward, paler and minutely 
tomentose or hoary above, concolorous, substriate, and furfuraceous below, solid, fleshy, 
and white within, 6-10 cm. long, 0.5-1.5 cm. thick. 
TYPE LOCALITY: Garrisons, New York. 
Hasitat: In woods on the ground or on much decayed logs or stumps. 
DISTRIBUTION: Nova Scotia to Georgia. 
ILLUSTRATION: MelIlv. Am. Fungi p/. 114, f. 1. 
4. Tylopilus alboater (Schw.) Murrill, Mycologial: 16. 1909. 
Boletus alboater Schw. Schr. Nat. Ges. Leipzig 1: 95. 1822. 
Boletus nigrellus Peck, Ann. Rep. N. Y. State Mus. 29: 44. 1878. (Type from New York.) 
Pileus convex, solitary or gregarious, 6-10 cm. broad, 2 cm. thick; surface pruinose to 
tomentose, very dark-brown to black; margin rather thick, involute when young: context 
white, changing to pinkish-gray when wounded, taste nutty; tubes adnate, slightly de- 
pressed, pale-gray to flesh-colored, changing slowly to black or reddish-black when 
wounded, 1 cm. long, mouths small, irregularly circular: spores oblong-ellipsoid, smooth, 
pointed at one end, dull flesh-colored, 10-12 4-6: stipe short, subequal, even, concolor- 
