152 NORTH AMERICAN FLORA [VOLUME 9 
fibers, occasionally rimose-areolate, brown with shades of red or yellow, often bright 
brownish-red, becoming paler with age; margin thick, obtuse, entire, sometimes slightly 
differing in color: context firm, whitish to flavous, quickly changing to blue when wounded, 
sometimes unchanging in older plants, considered somewhat poisonous; tubes nearly free, 
rarely adnate, plane or slightly convex in mass, yellow within, changing to dark greenish- 
blue when wounded, mouths small, circular, cinnabar-red, becoming brownish-orange, 
darker with age: spores oblong-ellipsoid, smooth, olivaceous when fresh, 11-16 X 4-6z: 
stipe subequal, 5-10 cm. long, 1-2 cm. thick, usually furfuraceous or punctate, at times 
nearly glabrous, rarely reticulate at the apex or on the upper half, red or reddish-brown 
below, yellow or orange above, the dots rosy or dark-red, solid, vellow within, varied with 
red or purple. 
TYPE LOCALITY: Bavaria. 
HABITAT: Clay banks or roadsides in open deciduous woods. 
DISTRIBUTION : Temperate North America and Europe. 
ILLUSTRATIONS: Fries, Sv. Aetl. Svamp. f/. 12, 41; Schaeff. Fung. Bavar. p/. 107; Bull. Herb. 
Fr. pl. 100; pl. 490, f. 1; Sturm, Deuts. Fl. Pilze 5: 2. 37; Atk. Stud. Am. Fungi /, 54; Gill. 
Champ. Fr. p/. 65; Palmer, Mushr. Am. p/. 9, f 3, 4. 
ExXsIccaTi: Herpell, Prap. Hutpilze 95; D. Sacc. Myce. Ital. 807. 
2. Suillellus Frostii (Russell) Murrill, Mycologia 1: 17. 1909. 
Boletus Frostii Russell; Frost, Bull. Buffalo Soc. Nat. Sci.2: 102. 1874. (Type from Vermont.) 
Boletus alveolatus Berk. & Curt.; Frost, Bull. Buffalo Soc. Nat. Sci. 2: 102. 1874. (Type from New 
England.) 
Pileus convex to plane, gregarious, 6-15 cm. broad; surface glabrous, shining, viscid 
in damp weather or when young, blood-red, sometimes paler-red with patches of yellow: 
context firm, juicy, white or yellowish, scarcely changing to greenish-blue when wounded, 
taste mild; tubes adnate, subdecurrent, depressed, straw-yellow within, changing slowly 
to greenish-blue when injured, yellowish-brown with age, mouths large, stuffed, edges 
blood-red: spores oblong-ellipsoid, smooth, brownish-yellow, with a greenish tinge when 
fresh, 12-15 4-5: stipe subventricose, tapering upward, blood-red, sometimes with 
yellow stains, becoming bluish-green when handled, deeply and beautifully alveolate-reticu- 
late its entire length, solid, firm, yellowish within, 7-10 & 2 cm. 
TYPE LOCALITY: Brattleboro, Vermont. 
Hasitat: Thin, grassy oak woods. 
DISTRIBUTION : New England to Virginia and west to Indiana and Tennessee. 
ILLUSTRATIONS: Gibson, Edible Toadst. pl. 24, f. 7; Palmer, Mushr. Am. f/.9, f. 2; Bull. 
N. Y¥. State Mus. 116: p/. 108, f. 1-5. 
3. Suillellus rubinellus (Peck) Murrill. 
Boletus rubinellus Peck, Ann. Rep. N. Y. State Mus. 32: 33. 1880. 
Pileus convex or subconical to plane, often umbilicate, gregarious, 1.5-5 cm. broad; 
surface reddish-brown, fading to yellow on the margin with age, slightly pubescent, some- 
what viscid when moist ; margin often recurved, thin, somewhat undulate: context white 
or pinkish, becoming yellowish when bruised, taste mild; tubes adnate or slightly 
depressed, 5 mm. long, mouths at first reddish, but soon turning brown, not changing 
color when bruised, small, circular or somewhat angular : spores oblong, fusiform, ferru- 
ginous-brown, 10-14 X 3-44: stipe equal, slender, even, pinkish-red changing to brown, 
solid, pale-yellow within, deeper yellow toward the base, often yellow externally at the 
base, 1-4 cm. long, 2.5-7.5 mm. thick. 
TYPE LOCALITY: Gansevoort, New York. 
HasBitatT: On the ground in coniferous or mixed woods. 
DISTRIBUTION: New York to North Carolina and Kentucky. 
ILLUSTRATION: Bull. N. Y. State Mus. 12: p/. 2, f. 20-22. 
4, Suillellus Eastwoodiae Murrill, sp. nov. 
Pileus thick, compact, hemispheric, solitary, nearly 10 cm. broad ; 
surface smooth, 
glabrous, shining, 
not at all viscid, very light-brown ; margin entire, slightly projecting, 
concolorous: context firm, nearly white with a yellowish tinge, changing to blue when 
wounded and later returning to ifs original color; tubes adnate, separating with age, about 
