Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain.
The following material is based on molecular research
of Dr. L. V. Kudzma and other original research of
R. E. Tulloss
36 mm wide, gray-brown in two of three to four zones,
paler (ca. 10YR 6/4) in remaining zone(s), in one
specimen becoming ochraceous
in bruised area near margin,
tacky, subshiny; context white to
off-white, sordid in disc, 2
mm thick above stipe,narrowing evenly until 2 - 3 mm
from margin, then membranous to margin;
margin nonappendiculate, striate (0.15-0.2R);
universal veil absent.
free, without decurrent tooth on stipe, close to
subcrowded, cream in mass, unchanging, off-white to
very pale cream in side view, 1.5 - 2.5 mm broad;
lamellulae truncate, plentiful, unevenly
distributed, of widely varying lengths.
79 × 8 mm, white, becoming grayish from
handling, narrowing upward, barely or not flarng at
apex, with short rounded
projection on base, pulverulent in topmost 20 mm,
fibrillose and finely striatulate below;
context hollow, off-white to pale brownish
white, with insect tunnels not observed,
with central cylinder 4 mm wide and lined with
white cottony fibrils;
exannulate; universal veil probably as
white cupulate volva at stipe base, with multiple
warts or small patches distributed from on lower
stipe, white at first, becoming gray, ca. 1 mm thick.
Odor faintly of decay. Taste not
lamella edge tissue
??; color in deposit not
Solitary. New Jersey: In loam of lawn under
Quercus rubra after 36 hours of soaking
rain. Pennsylvania: In humus of mixed woods
with Quercus and Prunus.
CONNECTICUT—New London Co. -
Colchester, Day Pond St. Pk. [41°33'25" N/
72°25'06" W, 134 m], 25.ix.1999 COMA1999 foray
participant s.n. [Tulloss 9-25-99-J] (RET
Unkn. Co. - unkn.
loc. (NEMF 2000 walk 8), 11.viii.2000 NEMF2000 foray
participant s.n. [Tulloss 8-11-00-D] (RET 317-4,
NEW JERSEY—Mercer Co. - Washington
Crossing St. Pk., arboretum area, 5.vii.1992 R. E.
Tulloss 7-5-92-A (RET 061-6, nrITS seq'd.).
NEW YORK—New York City (Manhattan),
Central Park, 24.vi.2006 BioBlitz participant s.n.
(RET 392-3, nrITS & nrLSU seq'd.).
PENNSYLVANIA—Allegheny Co. - Hampton
Twp., Hartwood Acres [40.5679° N / 79.9098° W,
381 m], 21.ix.2013 LaMonte Yarroll s.n. [WPMC
20130921-8] (RET 569-1, nrITS & nrLSU seq'd.).
This species might be confused with such taxa as
rhacopus, A. texasorora, or
however it differs from these taxa
by having three to four pigmentation zones on the
Because of the zonate pileus, this species might be
confused with similarly colored A. sp-N30.
This species was briefly called "Amanita
sp-rhacopus01" in RET's notes.
—R. E. Tulloss
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Spore data for collections provisionally identified as: Amanita sp-58 Tulloss
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
Combining more data into a single data set is non-optimal because it obscures observer differences
(which may be valuable for instructional purposes, for example) and may obscure instances in which
a single collection inadvertently contains a mixture of taxa.