164 \NORTH AMERICAN FLORA [VoLUME 9 
less than 5 mm., adnate, subdecurrent, plane in mass, pale-yellow to dirty-yellowish, 
unchanging when wounded, mouths simple, subcircular, irregular, edges rather thick, 
flecked with pinkish-brown glandules: spores fusiform, pale yellowish-brown, 7.5-9.5 X 
2.5-3.5 #: stipe short, thick, subequal or enlarged below, white or pale-yellow, dotted with 
pinkish-brown droplets which become darker on drying, solid, white within, 2.5-5 cm. 
long, 1-1.5 cm. thick. 
TYPE LOCALITY: Sweden. 
HABITAT: Open woods, especially near coniferous trees. . 
DISTRIBUTION : Temperate North America; Cinchona, Jamaica, 1666 m.; also in Europe. 
ILLUSTRATIONS: Barla, Champ. Nice fl. 31, f. ¢-12 ; Gill. Champ. Fr. p/. 61; Lucand, Champ. 
Fr. pl. 149; Sturm, Deuts. Fl. Pilze 52: p/, 3; Fries, Sv. Aetl. Svamp. pl. 237; Atk. Stud. Am. 
eas x: oe Mem. N. Y. State Mus. 3: pl. 66, f 1-6; Ann. Rep. N. Y. State Mus. 48: pl. 34, f. 
5; 49: pl. 48, f. 1-5. 
EXSICCATI Sate & Ev. Fungi Columb. 1/05; Ellis & Ev. N. Am. Fungi 1931, 3512; Herpell, 
Prap. Hutpilze 7? ; C. Baker, Pacif. Slope Fungi 97. 
2. Rostkovites subaureus (Peck) Murrill, Mycologia 1: 13. 1909. 
Boletus flavidus Peck, Ann. Rep. N. Y. State Cab. 23: 129. 1872. Not B. favidus Fries, 1815. 
Boletus subaureus Peck, Ann. Rep. N. Y. State Mus. 39: 42. 1886. 
Boletus americanus Peck, Bull. N. Y. State Mus. 1”: 62. 1887. (Type from New York.) 
Pileus thin, convex to expanded, sometimes umbonate, 5-10 cm. broad; surface very 
viscid, yellow, often dotted or streaked with bright-red, dingy with age, sometimes spotted 
from the drying of the gluten; margin slightly tomentose or appendiculate when young: 
context comparatively thick, fleshy-tough, pale-yellow, pinkish-gray when wounded, taste 
mild; tubes adnate, scarcely decurrent, plane in mass, bright-yellow to dull-ochraceous, 
flecked with yellowish, exuding drops which blacken with age, mouths rather large, 
angular, edges obtuse: spores oblong-ellipsoid, smooth, ochraceous-ferruginous, 8.5-11 X 
4-5: stipe slender, tapering upward, yellow, darker towards the base, covered with 
numerous brownish or reddish-brown glandular dots which blacken with age, solid, yellow 
within, 4-7 cm. long, 4-8 mm. thick. 
TYPE LOCALITY: Day, New York. 
HaBiTaT: Woods and borders, especially near coniferous trees. 
DISTRIBUTION: Eastern North America. 
ILLUSTRATIONS: Atk, Stud. Am. Fungi “#166; Bull. Conn. Geol. Nat. Hist. Surv. 3: £7.29; 
Mem. N. Y. State Mus. 3: p/. 61, f. 6-23. 
3. Rostkovites hirtellus (Peck) Murrill, Mycologia 1: 14. 1909. 
Boletus hirtelius Peck, Bull. N. Y. State Mus. 8: 94. 1889. 
Pileus broadly convex, subcespitose, 5-10 cm. broad; surface soft, viscid, golden-yel- 
low, adorned with small tufts of hairs or fibrils: context pale-yellow; tubes adnate, of 
medium size, becoming dingy-ochraceous, mouths angular: spores pale ochraceous-brown, 
9-10 X 4: stipe stout, equal, glandular-dotted, yellow, 4-7 cm. long, 0.8-1.2 em. thick. 
TYPE LOCALITY: New York. 
HaBitTat: Sandy soil under pines. 
DISTRIBUTION: Connecticut and New York. 
6. BOLETUS (Dill.) L. Sp. Pl. 1177. 1753. 
Suillus Poir. in Lam. Encyc. 7: 496. 1806. , 
Pinuzza S, F. Gray, Nat. Arr. Brit. Pl. 1: 646. 1821, 
Cricunopus P. Karst. Rev. Myc. 39: 16. 1881. 
Viscipellis Quél. Ench. Fung. 155. 1886. 
Hymenophore annual, terrestrial, centrally stipitate ; surface viscid, glabrous: context 
fleshy, white or yellowish ; tubes adnate, small, angular, yellowish, covered with a whitish 
veil: spores oblong-ellipsoid or rarely globose, smooth, yellowish-brown : stipe solid, 
annulate, often glandular-dotted. 
Type species, Boletus luteus L. 
Stem glandular-dotted. 
Stem not at all reticulate. 1 
Stem reticulate above the annulus. 2 
Stem not glandular-dotted. 
Spores globose or subglobose. 3 
Spores oblong-ellipsoid. 4 
. luteus, 
- amabilis, 
B 
B 
. B. sphaerosporus. 
B, Clinionianus. 
