158 NORTH AMERICAN FLORA [VoLUME 9 
10. BOLETINELLUS Murrill, Mycologia 1: 7. 1909. 
Hymenophore annual, terrestrial or sometimes attached to buried roots, pileus circular, 
varying to dimidiate at times; surface dry, minutely tomentose to floccose-tomentose: con- 
text white or yellowish, fleshy; tubes decurrent, large, shallow, elongate, not easily sepa- 
rating, radiating, yellow, not covered with a veil: spores ellipsoid, smooth, some shade of 
brown : stipe central, eccentric or lateral, solid, fleshy, or spongy. 
Type species, Boletinus porosus Peck. 
Stem eccentric or lateral ; pileus reddish-brown, glabrousor minutely tomentose. 1. B. meruliordes. 
Stem central. 
Pileus dark-chestnut, subtomentose. 2. B. castanellus, 
Pileus bright-red, floccose-tomentose. 3. B. paluster. 
1. Boletinellus merulioides (Schw.) Murrill, Mycologia 1: 7. 1909. 
Daedalea merulioides Schw. Trans. Am. Phil. Soc. II. 4: 160. 1832. 
Paxillus porosus Berk.; Lea, Cat. Pl. Cine. 54. 1849. 
Boletus lateralis Bundy, Geol. Wisc. 1: 398. 1883. 
Boletinus porosus Peck, Bull. N. Y. State Mus. 8: 79. 1889. 
Pileus thin, irregular, usually lobed, more or less deeply depressed at maturity, gre- 
garious, 5-12 cm. broad; surface dry, minutely tomentose, dull reddish-brown ; margin 
undulate or deeply lobed: context 5-10 mm. thick, yellow, changing slowly to bluish-green 
when wounded, having a musty or unpleasant odor; tubes decurrent, hymenium honey- 
yellow when young, becoming dull-yellow with age, often changing slightly to blue when 
wounded, tubes formed by radiating lamellae 2-3 mm. apart, branching and connected by 
numerous irregular veins of less prominence: spores subovoid to ellipsoid, smooth, yellow 
to brownish-ochraceous, 8-11 < 5-7 «: stipe lateral or excentric, tough, expanded into the 
pileus, reticulate at the apex by the decurrent walls of the tubes, concolorous, clothed 
like the pileus, hollow, 1-3cm. long, 8-12 mm. thick. 
TYPE LOCALITY: Pennsylvania. 
HABITAT: Shaded banks or wet places, especially about stumps and decaying roots. 
DISTRIBUTION : Canada to Alabama and west to Wisconsin. 
ILLUSTRATIONS: Atk. Stud. Am. Fungi p/.57; McIlv. Am. Fungi f/. 177; Bull. Conn. Geol. 
Nat. Hist. Surv. 3: p/. 28. : 
- ee Ellis, Ev. & Barth. Fungi Columb. 7977, Ellis, N. Am. Fungi 704; Shear, N. Y. 
ungi 27. 
2. Boletinellus castanellus (Peck) Murrill, Mycologia 1: 8. 1909. 
Boletinus castanellus Peck, Bull. Torrey Club 27: 613. 1900. 
Pileus convex or nearly plane, 2.5-4 cm. broad; surface dry, subtomentose, soft, 
spongy, dark-chestnut: context white or yellowish-white; tubes adnate or slightly decur- 
rent, nearly plane in mass, brown, mouths large, angular: spores ellipsoid, 7.5-10X 54: 
stipe short, concolorous, glabrous, slightly reticulate at the apex, solid, whitish or grayish 
within, 2.5 cm. long, 4-8 cm. thick. 
TYPE LOCALITY: New Jersey. 
HaBITaT: Woods. 
DISTRIBUTION : New York to Virginia, 
3. Boletinellus paluster (Peck) Murrill, Mycologia 1: 8. 1909. 
Boletus paluster Peck, Ann. Rep. N. Y. State Cab. 23: 132. 1872. 
Boletinus paluster Peck, Bull. N.Y. State Mus. 8: 78. 1889. 
Pileus thin, broad, convex to plane or slightly depressed, at times with a small umbo, 
3-7 cm, broad, 1.5-2 cm. thick; surface floccose-tomentose, bright-red; margin thin, sub- 
incurved: context yellowish-white, unchangeable, comparatively thick; tubes slightly de- 
current, short, yellow, changing to bluish-green when wounded, becoming sordid-ochraceous 
with age, mouths very large, 1-2 mm. in radial diameter, compound, angular ; spores ellip- 
soid, dirty greenish-yellow when fresh, becoming pinkish-brown, 6-8 X 2.544: stipe 
slender, yellow and striate at the apex, minutely squamulose, strongly tinged with red 
yellow and tomentose at the base, solid, 2.5-5 cm, long, 4-6 cm. thick. 
