134 NORTH AMERICAN FLORA [VoLUME 9 
hollow at maturity, concolorous, clothed with cottony threads, white within, becoming 
indigo-blue when wounded, 5-10 em. long, 1.5-3.5 cm. thick. 
TYPE LOCALITY: France. 
HABITAT: In woods and open places. : . 
DISTRIBUTION ; Canada and the northern United States from Maine to Minnesota and south to 
North Carolina; also in Europe. : 
ILLUSTRATIONS : Bull. Herb. Fr. /. 369; Gill. Champ. Fr, pl. 54, Fries, Sv. Aetl. Svamp. pl. 
80, Sturm, Deuts. Fl. Pilze 5: pl. 44. 
2. Gyroporus castaneus (Bull.) Quél. Ench. Fung. 161. 1886. 
Boletus castaneus Bull. Herb. Fr. pl. 328. 1786. 
Suillus castaneus P, Karst. Bidr. Finl. Nat. Folk 37: 1. 1882. 
Pileus convex to subexpanded, slightly depressed, gregarious, 3-7 cm. broad; surface 
smooth, dry, minutely but densely tomentose, orange-brown, fulvous, or reddish-brown ; 
margin thin, usually paler : context white, firm, nutty in flavor, unchanging when wounded ; 
tubes depressed, sinuate, short, watery-white becoming light-yellow to dark-cremeous, 
mouths angular, small, stuffed when young, edges thin, entire: spores ellipsoid, smooth, 
hyaline to pale-yellowish, 8-9 X4.5-5.54: stipe subattenuate above and below, cylindric 
or somewhat flattened, tomentose, bright-brown, lighter at the apex, brittle, loosely stuffed, 
with a small cylindric cavity at the center, 4-5 cm. long, 6-10 mm. thick. 
TYPE LOCALITY: France. 
HasiTaT: In sandy soil in open woods. 
DISTRIBUTION : Temperate North America and Europe. 
ILLUSTRATIONS: Bull. Herb. Fr, p/. 328; Barla, Champ. Nice /.32, f. 11-15, Gill. Champ. 
Fr. pl. 51; Mcllv. Am. Fungi pl. 114, 7.3; Ann. Rep. N. Y. State Mus. 48: p/. 36, f. 1-7; Hussey, 
Il. Brit. Myc. 2: pl. I7. 
EXsICccaTI: Ellis & Ev. N. Am. Fungi 2302. 
3. Gyroporus subalbellus Murrill, sp. nov. 
Pileus convex, rather thick, scattered, 5cm. broad ; surface dry, smooth, finely tomen- 
tose to glabrous, pale-isabelline; margin entire, fertile: context spongy-fleshy, easily dry- 
ing, whitish, unchanging; tubes nearly free, longer than the thickness of the context, 
mouths light-yellow, unchanging: spores ovoid, smooth, hyaline under a microscope, 7 
4.5: stipe ventricose, thick, distorted, smooth, pale-isabelline or nearly white, hollow, 
7 cm. long. 
Type collected at Ocean Springs, Mississippi, on sandy soil in mixed woods, September 14, 
1904, Esther S. Earle 203. 
DISTRIBUTION : Known only from the type locality. 
2. TYLOPILUS P. Karst. Rev. Myc. 3°: 16. 1881. 
Dictyopus Quél. Ench. Fung. 159. 1886. 
Rhodoporus Quél. Fl. Myc. Fr. 420. 1888. 
Hymenophore annual, terrestrial or rarely epixylous, centrally stipitate; surface dry, 
glabrous or minutely tomentose : context white, fleshy, sometimes bitter ; tubes small, 
angular, white, becoming flesh-colored from the spores, not covered with a veil: spores ob- 
long-ellipsoid, smooth, rosy or flesh-colored, rarely inclining to ferruginous : stipe solid, 
even or reticulate. 
Type species, Zylopilus felleus (Bull.) P. Karst. 
Pileus yellow to brown. 
Sporophore large ; stipe 1 cm. or more thick. 
Context decidedly bitter. 
Context not bitter. s ane 
__Sporophore usually small; stipe about 5 mm. thick, never reticulate. rar at pane : 
Pileus black or blackish ; tubes becoming blackish when wounded. 4. T. alboater. 
1. Tylopilus felleus (Bull.) P. Karst. Rev. Myc. 3°: 16. 1881. 
Ho ee Bull. Herb. Fr. pl. 379. 1787. : 
? Boletus modesius Peck, Ann. Rep. N. Y. State Mus. 25: 81. 1873, 
Boletus ferrugineus Frost, Bull. Buffalo Soc. Nat. Sci. 2: 104. 1874. a none) 
Dictyopus felleus Quél. Ench. Fung. 159. 1886. 
Rhodoporus felleus Quél. Fl. Myc. Fr, 420. 1888. 
Boletus subpunctipes Peck, Bull. N. Y. State Mus. 116: 19. 1907. 
Pileus thick, convex, usually 8-15 cm. broad, sometimes reaching a diameter of over 
