The specimens of the Amanita sp-GSM05 are
merged with A. longicuneus and the temporary
code name "A. sp-GSM05" will be abandoned.
The cap of A. longicuneus is 44 - 68 mm wide,
pale brown with dark brown over disc or gray with
brownish cast and darker in the center. Old
wounds become pallid ochraceous to brown. The
shape is convex at first, then plano-convex,
subumbonate to umbonate; with age, it may develop a
somewhat depressed disk. The surface is tacky
when moist and subshiny to shiny. The flesh is
white to a very palely sordid white and sordid to
concolorous with the cap just under the cap's skin;
it may sometimes take on a faint pink flush on a
surface, while older cut surfaces become rusty to
sordid to pale brown. The cap's margin is
striate to tuberculate-striate, and the striations
occupy 40% to 60% of the cap's radius. Volval
remnants are absent or sometimes are present as a
large tough patch (at times with raised edges) that
is whitish with rusty spots or eventually becomes
The gills are free to narrowly adnate, sometimes with a short (occasionally very short) decurrent line on the upper stipe. They are close to subcrowded to crowded, white to whitish to pale cream to cream in mass and white to watersoaked white in side view. They may sometimes grow together here and there or (occasionally) fork. The short gills are truncate to subtruncate to rounded truncate, rarely attenuate, of diverse lengths, plentiful, and unevenly distributed.
The ringless stem is 61 - 125 × 5 - 10 mm, white to off-white or dingy white, becoming pale brown to orange-brown to brown from handling, narrowing upward, flaring at apex (sometimes minimally), smooth to pruinose above, and minutely scurfy or with minute upward-pointing fibrillose scales below (with fibrils taking on brownish or sordid tinge). The stem flesh is white to off-white to very pale yellowish white to very pale orange-white, pale brown to brown when cut or bruised, sometimes with ochraceous spots, and sometimes faintly pinkish on newly cut surfaces. The stem is hollow to stuffed. The volva is sack-like, abruptly flaring, membranous, smooth, whitish, and 11.5 - 41 × 14.5± mm. It is more or less attached to the stem for about one-half to two-thirds (rarely one-quarter) of its height. Its proposed name relates to an unusually long and rather thin internal limb of the volva (at times nearly as long as the free part of the sack) arising where the volva is attached to the stem and eventually becoming appressed to either inner surface of the volva or to the stem.
This species is both odorless and tasteless.
The spores measure (8.7-) 9.6 - 12.5 (-14.5) × (8.2-) 9.0 - 11.5 (-14.0) µm and are globose to subglobose (infrequently broadly ellipsoid) and inamylloid. No clamps are to be found at bases of basidia.
This entity is known from only Connecticut and
New Jersey, U.S.A., at the present time. It is
not a rare find in its fruiting season.
The distinguishing character of this species (within
its known range) is the form of the internal limb of
the volva. When the fruiting body is cut in half
lengthwise, the volval sac is seen to have two limbs.
The outer limb covered the entire mushroom during its
early development. The inner limb (which also
completely encircles the stem), was between the stem
and what became the free edges of the gills during
development. In this species, the shape of the
cross-sectioned inner limb is that of a very long
and narrow wedge.
On this site, the species has also been
known under the names Amanita sp-GSM05 and
A. sp-longicuneus01.—R. E. Tulloss
Tulloss, Kudzma & K. W. Hughes
"Long Wedge Ringless Amanita"
longus "long" + cuneus "wedge"; hence, "long wedge", because of the unusually tall limbus internus of the universal veil
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The following text may make multiple use of each
The field may contain magenta
text presenting data from a type study
and/or revision of other original material cited in
the protolog of the present taxon.
Macroscopic descriptions in magenta are a
combination of data from the protolog and
additional observations made on the exiccata during
revision of the cited original
The same field may also contain black text, which is
data from a revision of the present
taxon (including non-type material and/or material
not cited in the protolog).
Paragraphs of black text will be labeled if further
this text is appropriate.
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 molecular research
of Dr. Linas Kudzma and other original research of
R. E. Tulloss.
44 - 68 mm wide, deep gray-brown or
??, old wounds pallid ochraceous to brown, convex,
then plano-convex, subumbonate to umbonate, with
somewhat depressed disk in age, tacky, subshiny to
shiny; context white to very pale sordid white,
sordid to concolorous with pileus under pileipellis,
sometimes taking on faint pink flush on newly cut
surface, older cut surfaces rusty to sordid to pale
brown, sometimes with watersoaked line above lamellae,
3 - 5 mm thick at stipe, thinning evenly for two
thirds to three quarters of radius, then membranous to
margin; margin striate to
tuberculate-striate (0.4 - 0.6R), nonappendiculate;
universal veil absent or sometimes as large
patch, tough, whitish with rusty spots or eventually
becoming completely orange-brown, detersile, at
times with raised edges.
free to narrowly adnate, sometimes with short (occasionally very short) decurrent line on stipe apex, close to subcrowded to crowded, white to whitish to pale cream to cream in mass, white to watersoaked white in side view, 2 - 7 mm broad, occasionally forking and/or anastomosing; lamellulae truncate to subtruncate to rounded truncate, rarely attenuate, of diverse lengths, plentiful, unevenly distributed.
61 - 125 × 5 - 10 mm, white to off-white or dingy white, becoming pale brown to orange-brown to brown from handling, narrowing upward, flaring at apex (sometimes minimally), smooth to pruinose above, minutely scurfy or with minute upward-pointing fibrillose scales below, with fibrils taking on brownish or sordid tinge, surface sometimes breaking up into recurved scales; context white to off-white to very pale yellowish white to very pale orange-white, pale brown to brown when cut or bruised, sometimes with ochraceous spots, sometimes faintly pinkish on newly cut surfaces, hollow to stuffed, always with some cottony white material in central cylinder (2 - 4.5 mm wide), sometimes brick colored in areas of larva damage near base of stipe, otherwise larva tunnels concolorous to ochraceous to fulvous; exannulate; universal veil as saccate, abruptly flaring volva, membranous, smooth, whitish, 11.5 - 41 × 14.5± mm, appressed to stipe for about one half to two thirds (rarely one quarter) of limb’s length, with limb < 1 mm thick at mid-height, with unusually long and rather thin limbus internus (at times nearly as long as free limb) arising at point of volval attachment to stipe and eventually becoming appressed to inner surface of volva or to stipe.
Odorless and tastless.
Spot test for tyrosinase (L-tyrosine)
- quickly positive in stipe, lamellae, and universal
veil (other tissues not tested).
[40/2/2] (10.2-) 10.5 - 12.2 (-12.5) ×
(8.2-) 9.0 - 12.0 (-14.0) µm,
(L = 11.2 - 11.4 µm; L’ = 11.3 µm;
W = 10.5 - 10.6 µm; W’ = 10.6 µm;
Q = (1.02-) 1.03 - 1.11 (-1.14);
Q = 1.05 - 1.08; Q’ = 1.07),
hyaline, colorless, thin-walled, inamyloid, globose to
subglobose, rarely broadly ellipsoid, usually
adaxially flattened; contents granular to mono-
or multiguttulate, with additional small granules;
apiculus sublateral to lateral, cylindric to
broadly truncate-conic; white in deposit.
Solitary to subgregarious.
At 63 - 1190 m elev.
Connecticut: In loam of Quercus-Fagus-Tsuga
forest or in mixed deciduous woods.
Louisana: In sandy soil, under Fagus
grandifolia in mostly deciduous forest with
some Cupressaceae sp.
New Jersey: In Quercus-Pinus barrens sometimes
including Nyssa sylvatica or in loam of
Quercus-Fagus-Carya woods or in pure
Quercus forest with little ground cover.
New York: In forest with Betula, Fagus
grandifolia, Acer, Fraxinus, and
Tsuga canadensis or in mixed forest with Quercus
prinus, Q. rubra & Castanea
North Carolina: In mixed hardwood forest.
Quercus-dominated forest with Carya
Co. - Washington, Steep Rock Preserve,
41.6215° N/ 73.3247° W, 135 m, 24.vii.1992 Lynn
Payer s.n. [Tulloss 7-24-92-F] (RET 066-7, nrITS
seq'd.). Middlesex Co. - Devil’s
Hopyard St. Pk. [41°28'32" N/ 72°20'25" W, 72 m],
24.viii.2007 Noel Rowe s.n. [RET 8-24-07-O] (RET
438-3, nrITS seq'd.). 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 301-9).
Parish - Kisatchie
Nat. For., Hwy. 123 & Fish Crk., Little Crk.
[31.7192º N/ 92.2943º W, 37 m], 2.xii.2017
Mary & R. E. Tulloss 12-2-17-A
(RET 813-8, nrITS & nrLSU seq'd.).
NEW JERSEY— Cape May
Co. - Belleplain St. For., ca. Dennisville
[39°11’22” N/ 74°51’12” W], 29.x.1983 M. A. King,
N. & A. Macdonald & R. E. Tulloss [Tulloss
10-29-83-C] (RET 208-9).
Hunterdon Co. - Lebanon Twp., Teetertown Ravine Nat.
Pres., 13.viii.2017 Igor Safonov s.n.
(RET 801-10, nrITS & nrLSU seq'd.).
Mercer Co. - Hopewell Twp., off Carter Rd., woods
behind AT&T/Lucent research labs [40°21’39” N/
74°43’29” W, 63 m], 13.ix.1984 C. D. Hechtman &
R. E. Tulloss [Tulloss 9-13-84-B] (RET 206-3),
14.ix.1984 C. D. Hechtman & R. E. Tulloss
[Tulloss 9-14-84-A] (RET 237-7), [Tulloss 9-14-84-B]
Monmouth Co. - Roosevelt, Valley Rd. bicycle path
[40.2136° N/ 74.4719° W, 70-105 m], 5.ix.2004 R.E.
Tulloss & Glenn Boyd 9-5-04-A (RET 379-9, nrITS &
nrLSU seq'd.), 13.viii.2014
Naomi Goldman & R. Resciniti s.n. (RET 629-6,
Shark River Co. Pk. [40°12’18” N/ 74°05’44” W, 16 m],
30.ix.1984 members of
“birthday foray” s.n. [Tulloss 9-30-84-H] (RET
235-2), [Tulloss 9-30-84-J]
(RET 235-1), Perry Randise s.n. [Tulloss
9-30-84-G] (RET 235-3), Peter Wood s.n. [Tulloss
9-30-84-K] (RET 234-10), D. C. & R. E. Tulloss
9-30-84-A (RET 235-4), -B (RET 234-3), 28.viii.1985
R. E. Tulloss 8-28-85-A (RET 099-9), -E (RET 100-3),
NJMA foray participant s.n. [Tulloss 9-13-98-B]
(RET ??), 13.ix.1998
R. E. Tulloss 9-13-98-C (RET
Morris Co. - Mendham, Meadowood Twp. Pk. [40.7923º N/
74.6449º W, 242 m], 15.vii.2017 unkn. coll. s.n.
(RET 801-9, nrITS & nrLSU seq'd.).
NEW YORK—Cattaraugus Co. - Allegany St. Pk.,
Cold Spring, Mt. Tuscarora [42.0329° N/
78.876° W, 640 m], 24.vi.2015 Garrett
Taylor s.n. [mushroomobserver.org
(RET 699-3, nrITS & nrLSU seq'd.).
Oneida Co. - unkn. loc., 12.vii.2015 Eric Smith s.n.
(RET 718-3, nrITS & nrLSU seq'd.).
Richmond Co. (Staten Isl.) -
High Rock Pk. [40.5856° N/ 74.1257° W, 62m],
11.ix.2018 Sigrid Jakob s.n.
[Tulloss 9-12-18-B] (RET 841-6,
Sullivan Co. - Catskills Pk.,
Mongaup Pond, 8.viii.2015 David Wasilewski s.n.
(RET 706-9, nrITS seq'd.).
Ulster Co. -
NEMF2010, Walk 7, 24-25.ix.2010 Claude s.n. (RET
586-7, nrITS fragments seq'd.).
NORTH CAROLINA—Macon Co. - Nantahala
Nat. For., Standing Indian Campground, viii.2010 Jay
Justice NC-AM-23 (RET 593-4). McDowell Co. -
ca. Little Switzerland, Anderson Crk., 9-30-17-B
Stacia Warwick s.n. [Tullos 9-30-17-B] (RET 796-5,
PENNSYLVANIA—Luzerne Co. - Ricketts
Glen State Forest [41.3036° N/ 76.2740° W,
400-600 m], 12.vii.2015 David Wasilewski s.n.
(RET 642-5, nrITS & nrLSU seq'd.); unkn. loc.,
18.viii.2011 D. Wasilewski s.n. [mushroomobserver
(RET 499-7, nrITS seq'd.).
Sullivan Co. - Lake
John [41.431° N/ 76.272° W, 700 m], 19.vii.2014 D.
Wasilewski s.n. [mushroomobserver
(RET 642-10, nrITS & nrLSU seq'd.).
Co. - Great Smoky Mountains Nat. Pk., ca. Gatlinburg,
Alum Cave trailhead
[35°37'48” N/ 83°27'04” W, 1190 m], 13.vii.2004 M.
Keirle s.n. [Tulloss 7-13-04-H] (RET 374-9, nrITS &
Genetic studies indicate that it is probable that RET
has included collections of more than one genetically
identifiable taxon under the present name. We
are in the process of sorting this out. We hope
to sequence the earliest collections placed in this
grouping—those from 1984 and 1985.
This taxon was called "Amanita sp. 28" in
earlier correspondence, checklists, and keys of
Tulloss. On this site, the species has also been
known under the names Amanita sp-GSM05 and
—R. E. Tulloss and C. Rodríguez Caycedo
Information to support the viewer in reading the content of "technical" tabs
can be found here.
Tulloss, Kudzma & K. W. Hughes
"Long Wedge Ringless Amanita"
1. Amanita longicuneus, Shark River Co. Pk., Monmouth Co., New Jersey, U.S.A. (RET 235-4)
2. Amanita longicuneus
3. Amanita longicuneus
4. Amanita longicuneus
RET - (1) Shark River County Park, Monmouth County,
New Jersey, U.S.A.
(2) Great Smoky Mountains National Park,
Sevier County, Tennessee, U.S.A.
Garrett Taylor - (3) Mount Tuscarora, Cold Spring,
Allegany State Park, Cattaraugus County, New York,
U.S.A. (RET 699-3) [Note: Original
unedited images are to be found
David Wasilewski - (4) Ricketts Glen State Park,
Luzerne County, Pennsylvania, U.S.A.
(RET 642-5) [Note: Original, unedited
images are to be found
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.