[Vor. 1 
152 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
KEY TO THE SPECIES 
Са, ХА; И re LIII 1 
р с. 25552555. ымыз 2 
1. Context less than 2 mm. thick; tubes or teeth less than 5 mm. long; pileus 
MEM SU cU ыс. ІЛЕ 1. I. tulipifera 
1. Context more than 2 mm. thick; tubes or teeth more than 5 mm. long. .2. J. mollis 
2. Hymenium сіппатоп-тоут.......................... 8. I. cinnamomeus 
2. Hymenium grayish green to оПуасеойв.................... 4. I. farinaceus 
1. I. tulipifera Schw. ex Fries, Epicr. Syst. Myc. 523. 1838. 
Boletus tulipifera Schw. Syn. Fung. Car. 99. 1822. 
Plants sessile, effused-reflexed, or entirely resupinate; pileus 
dimidiate to elongate in outline, 0-1 x 1-3 x 0.1-0.6 cm., cori- 
aceous, white or whitish, villous, zonate, margin thin and acute; 
context white, fibrous, 0.5-2 mm. thick; tubes 1-5 mm. long, 
the mouths light colored, averaging 2 to à mm., soon breaking 
up into compressed teeth that are connected at the base, and 
often with a concentric arrangement. 
On dead wood of deciduous trees. Common. 
From 1. cinnamomeus Fries, and 1. farinaceus Fries this 
plant is separated by the white or whitish color, and from 1. 
mollis Berk. & Curt. by the much thinner pileus and the shorter 
tubes or teeth. 
2. I. mollis Berk. & Curt. Jour. Bot. & Kew Misc. 1: 236. 
1849. 
Pileus sessile or effused-reflexed, dimidiate, 2-5 x 5-10 x 1-3 
em., coriaceous, white or whitish, minutely tomentose to glab- 
rous, azonate, margin thin and acute; context white, 2-6 mm. 
thick, fibrous; hymenium usually irpiciform, the teeth white, 
coriaceous, 0.5-1.5 ст. long, compressed, united at the base. 
On dead wood of deciduous trees. 
This plant was reported from the Miami valley by Morgan. 
I have not collected it in Ohio. It is much thicker than J. tulip- 
ifera Schw. ex Fries, and the teeth are much longer. 
3. I. cinnamomeus Fries, Epicr. Syst. Myc. 524. 1838. 
Pileus none, fungus usually entirely resupinate, coriaceous in 
texture, 2-5 mm. thick, entirely cinnamon-brown; context 
brown, not more than 1 mm. thick, fibrous; tubes or teeth 1-5 
mm. long, becoming toothed at a very early stage, cinnamon- 
brown in color, more or less flattened, connected at the base. 
