Toadstools, mushrooms, fungi, edible and poisonous; one thousand American fungi
1. Tubes free, with red mouths B. auriflammeus
647 words | Chapter 106
_Peck_, Boleti of the U.S., p. 103.
=B. hemichry´sus= B. and C.—half-golden. =Pileus= convex, at length
plane or irregularly depressed, floccose-squamulose, covered with a
yellow powder, sometimes cracked, bright golden-yellow. =Flesh= thick,
_yellow_. =Tubes= adnate or decurrent, yellow, becoming reddish-brown,
the mouths large, angular. =Stem= _short, irregular, narrowed below_,
sprinkled with a yellow dust, yellowish tinged with red; mycelium
yellow. =Spores= oblong, minute, dingy-ochraceous.
Var. _muta´bilis_. =Flesh= slightly changing to blue where wounded.
=Stem= reddish, yellow within, sometimes eccentric. =Spores=
oblong-elliptical, 7.5–9×3–4µ.
=Pileus= 1.5–2.5 in. broad. =Stem= about 1 in. long, 3–6 lines thick.
Roots of pine, _Pinus palustris_. The variety on stumps of _Pinus
strobus_.
South Carolina, _Ravenel_; North Carolina, _Curtis_; New York, _Peck_.
The species is remarkable for its habitat, which is lignicolous. The New
York variety grew on a stump of white pine. By its eccentric stem it
connects this genus with Boletinus, through Boletinus porosus. According
to the authors of this species it resembles Boletus variegatus. _Peck_,
Boleti of the U.S.
=B. Ravenel´ii= B. and C.—after Ravenel. =Pileus= convex or nearly
plane, _slightly viscid when young or moist_, covered with a
sulphur-yellow powdery down, becoming naked and dull-red on the disk.
=Flesh= whitish. =Tubes= at first plane, _adnate_, pale-yellow, becoming
yellowish-brown or umber, dingy-greenish where bruised, the mouths large
or medium size, subrotund. =Stem= nearly equal, clothed and colored like
the young pileus, yellow within, with a slight evanescent webby or
tomentose ring. =Spores= ochraceous-brown, 10–12×5–6µ.
=Pileus= 1–3 in. broad. =Stem= 1.5–4 in. long, 3–6 lines thick.
Woods and copses. South Carolina, _Ravenel_; North Carolina, _Curtis_;
New York, _Peck_; New England, _Frost_.
This is a very distinct and very beautiful species. Mr. Ravenel remarks
in his notes that “this plant is not infested by larvæ and preserves
more constant characters than any other Boletus with which I am
acquainted.” The webby powdered filaments constitute a universal veil
which at first covers the whole plant and conceals the young tubes. As
the pileus expands this generally disappears from the disk, and,
separating between the margin and the stem, a part adheres to each. The
flesh is sometimes stained with yellow. The tubes in some instances
become convex and slightly depressed around the stem. They are almost
white when young, and often exhibit brownish hues where wounded. The
plant is sometimes cespitose. I have observed a greenish tint to the
freshly shed spores, but it soon disappears. Boletus subchromeus Frost
Ms. is this species. _Peck_, Boleti of the U.S.
=B. auriflam´meus= B. and C.—flaming yellow. =Pileus= convex, _dry_,
powdered, bright golden-yellow. =Flesh= white, unchangeable. =Tubes=
plane or convex, _free_, yellow, their broad angular _mouths scarlet_.
=Stem= slightly tapering upward, powdered, colored like the pileus.
=Spores= 10–12.5×5µ.
=Pileus= 8–12 lines broad. =Stem= 1–1.5 in. long.
Woods. North Carolina, _Curtis_; New York, _Peck_.
This is evidently a rare species and as beautiful as it is rare. The
whole plant is bright-yellow except the tube mouths, and is sprinkled
with yellow dust or minute yellow branny particles. In the New York
specimen the scarlet color is wanting in the marginal tube mouths and
the stem is marked with fine subreticulating elevated lines. In other
respects it agrees well with the diagnosis of the species. _Peck_,
Boleti of the U.S.
SUBPRUINOSI—_sub_, _pruina_, hoar frost.
=Pileus= glabrous, but more often pruinose. =Tubes= adnate, yellowish.
=Stem= equal, even, neither bulbous nor reticulated.
The species of this tribe have the pileus neither viscid nor distinctly
and permanently tomentose. Typically it is glabrous or merely pruinose,
but Fries has admitted into the group one species with a pulverulent,
and one with a silky pileus. The species are not sharply distinguished
from those of the following tribes, and possibly some have been admitted
here which might as well have been placed there. Some of the species are
variable in color and their characters are not sufficiently well known.
Tubes bright-yellow, golden or subochraceous 1
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