=Alveolate Boletus--Boletus alveolatus=
=Pileus:= Smooth, polished; bright, deep crimson
or maroon, occasionally mottled or marbled with
yellowish; three to six inches in diameter.
=Flesh:= Firm and solid in substance; pale greenish or
yellowish white, changing blue in fracture or where
bruised.
=Tubes:= Tube-surface reaching the stem proper;
undulate with uneven hollows; maroon, the tubes in
section being yellow beyond their dark red mouths.
=Spores:= Yellowish brown.
=Stem:= Usually disproportionately long, covered with
depressions or oblong pitted indentations, with
intermediate coarse network of raised ridges; red
and yellow.
=Habitat:= Woods; quite common.
=Bitter Boletus--Boletus felleus=
=Pileus:= At first firm in substance, becoming soft
and cushion-like; smooth, without polish, varying
in color from pale ochre to yellowish or reddish
brown; diameter three to nine inches.
=Flesh:= White on immediate section, generally
changing to slight pinkish or flesh color in
fracture.
=Tubes:= Tube-surface rounded upward as it reaches
stem; white at first, becoming dull pinkish with
age, or upon being bruised.
=Spores:= Flesh colored or dull pink.
=Stem:= Usually quite stout, nearly as smooth as the
cap, and somewhat lighter in color; more or less
ridged with coarse reticulations, occasionally
covered with them to its thickened base.
=Taste:= Bitter.
=Habitat:= Rich woods and copses, often about decaying
trunks.