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EDIBLE AND POISONOUS MUSHROOMS OF CANADA
yellowish on the lower surface, creamy white with a yellow margin on the upper
surface, striate, volva on the bulb thick, membranous, sordid buff, staining
reddish, usually forming a neat appressed boot so tightly appressed as to be
inconspicuous and overlooked, occasionally leaving rings of dingy tissue on
the stipe above the bulb, present on the pileus in dingy buff, floccose warts, or
(especially in young buttons) in bright yellow, floccose fragments, a few of
which may cling to the stipe or annulus but which seem to be lacking from the
bulb except perhaps around its margin, spores smooth, white, amyloid, ellip-
soid, 7.5-9 (10) X 5.5-6.5 ^l.
Solitary or in groups on the ground in woods. June-Sept.
This seems to be a rather rare Amanita^ although it may not be uncommon
in certain localities. The combination of reddening stipe base, lack of any
orange-red coloring in the pileus, and amyloid, ellipsoid spores will distinguish
it from other yellowish species. The warts frequently disappear from the pileus,
leaving it glabrous. The thick white flesh of the bulb may pull apart into slight
scales or rings as the mushroom grows.
AMANITA FROSTIANA Peck Not edible
Figures 129, 130, page 71
PILEUS X-lYi in. broad, convex, expanding to plane, deep orange or
reddish orange on the disk, often changing to clear yellow on the margin,
conspicuously striate, viscid, bearing scattered, friable-floccose warts which
are usually yellow or more rarely whitish with a few bright yellow fragments
clinging to them, flesh thin, white, tinged yellow beneath the cuticle, odor not
distinctive, lamellae free, moderately broad, close, white or tinged creamy
yellow, at times yellow-marginate. stipe 2-4 J/2 in. long, about i/i in. thick,
subequal or tapering upward above the small, oval or subglobose bulb, stuffed,
becoming hollow, white or pale yellow, subglabrous. annulus fragile, mem-
branous, often yellow, volva on the bulb forming a Httle white boot with a
free collar at the margin, usually with few to many bright yellow friable frag-
ments clinging to the bulb and stipe base, on the pileus either entirely yellow
and friable, or at times white-floccose with a few bright yellow friable frag-
ments adhering, spores nonamyloid, smooth, white, subglobose to globose,
apiculate, 7.5-9.5 X 7-9 /x-
rare.
Solitary or in groups on the ground in mixed woods. July-Sept. Rather
This species is easily confused with both A. muscaria and A. flavoconia,
although it differs from both in its globose spores and the collared white boot
on the bulb. From A. muscaria it also differs in its small stature and the yellow
friable warts on the pileus. The nonamyloid spores and the prominent stria-
tions on the pileus margin are further characters that separate it from A.flavo-
conia.
It is said to be nonpoisonous but the danger of confusing it with A. mus-
caria is too great and it should be avoided at all times.
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