| name |
Amanita justicei |
| author |
Tulloss & Kudzma |
| name status |
nomen provisorum |
| english name |
Justice's Ringless Amanita |
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
|
| intro |
The following text may make multiple use of each data field.
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
material.
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 subdivision of
this text is appropriate.
Olive text indicates a specimen
that has not been thoroughly examined (for example,
for microscopic details and/or molecular data) and
marks other places in the text
where data is missing or uncertain.
The following material is based on the notes and
photographs of the collectors, the molecular
research of Dr. L. V. Kudzma, and other original
research of R. E. Tulloss. |
| pileus |
58 - 68 mm wide, over disc and marginal striations
tan or yellowish tan
becoming sordid yellow-brown over disc and
over marginal striations, with lighter (less brown)
intervening zone yellowish to yellow cream,
becoming pale olive tan, all parts more sordid
with age, broadly campanulate becoming planoconvex
then subplanar, umbonate, dull,
tacky to waxy; context 5.5 - 6.5 mm
thick over stipe,
whitish, unchanging when cut or bruised, pale tan in
larva tunnels, thinning,
evenly for 65 - 75% of radius, then membranous to
margin; margin non-appendiculate, striate to
tuberculate-striate
(0.3 - 0.45R - 0.6R in age); universal veil
absent. |
| lamellae |
free, with decurrent line on stipe developing with
age, crowded, sordid cream to sordid yellowish cream
in mass, white to pale cream to cream in
side view, not staining or bruising, 3.5 -
5+ mm broad broadest ca.
one-third to one-half length from stipe;
lamellulae
truncate to excavate truncate, sometimes with tooth
at pileus context, unevenly distributed (separated by
1 - 5 lamellae), of diverse lengths,
plentiful. |
| stipe |
120 -150 × 8± mm, white to pale buff,
graying with age or browning from
handling, narrowing upward, flaring very slightly at
apex, pulverulent in upper 30-50 mm, eventually
longitudinally striatulate below, sometimes with
scattered fibrils concolorous with pileus;
context stuffed or partially hollow, off-white to cream,
becoming sordid overnight, with stuffing material
white and cottony and with fibrils
roughly longitudinally oriented, with some lacunae;
with scant larval tunnels concolorous if present;
exannulate;
universal veil as white smooth firm
persistent subtubular saccate volva,
25 × 13 mm, with limb up to 1.5 mm thick,
easily detached, with 10 mm of volval tissue below
stipe base, with limbus internus attached
at or
slightly above stipe base (10 - 12.5 mm from stipe
base). |
| odor/taste |
Odor lacking. Taste not recorded. |
macrochemical
tests |
none recorded. |
| partial veil |
absent. |
| lamella edge tissue |
sterile. |
| basidiospores |
[40/2/2] (7.6-) 9.6 - 11.4 (-12.3) × (7.0-)
8.6 - 10.3 (-11.0) μm, (L = 10.4 μm;
L' = 10.4 μm; W = 9.3 - 9.5 μm;
W' = 9.4 μm; Q = (1.03-)1.05 - 1.16 (-1.23);
Q = 1.09 - 1.11; Q' = 1.10),
??,
??,
smooth, thin-walled, inamyloid, subglobose to
(infrequently) broadly ellipsoid,
??; apiculus
sublateral, ??;
contents ??;
white in deposit |
| ecology |
Solitary.
Alabama: Near small lake in dark loam of
open woods including Pinus and
Quercus or in forest with Quercus and
Pinus taeda.
Missouri: At ca. 245-300 m elev.
In humus of upland Quercus-Carya forest or
in lawn under old Quercus or on ridge with
Q. alba, Q. rubra and
Carya.
New Jersey: At ca. 214 m elev.
Solitary in mixed forest with plentiful Quercus
and Fagus grandifolia. |
| material examined |
U.S.A.:
ALABAMA—Unkn. Co. -
ca. border of Shelby & Jackson Cos., near small
lake, 22.viii.1984 R. E. Tulloss, Dr.
Cornelis Bas, Dr. David T. Jenkins [Tulloss
8-22-84-L] (RET 235-8, nrITS & nrLSU seq'd.);
[Tulloss 8-22-84-G] (RET 235-9, nrITS seq'd.).
MARYLAND—Allegany Co. - Flintstone,
Warrior Mountain [39.7022° N/ 78.5738° W, 260 m],
21.vii.2018 Ryan Pridgeon s.n. [mushroomobserver
#324397]
(RET 859-7, nrITS-LSU seq'd.).
Harford Co. - Bel Air, Bynym Run Conservation Area
[39.4959º N/ 76.2856º W, 27 m], 24.viii.2019 R.
Pridgeon s.n. [MycoFlora 25857] (RET 882-3, nrITS-LSU
seq'd.).
MISSOURI—Camden Co. - ca. Camdenton,
Ha Ha Tonka St. Pk., Quarry Unit [37.9774° N/
92.7696° W, 266 m], 27.vi.2009 Jay
Justice, Sherry Kay, C. Crabtree et al. s.n.
[Tulloss 6-27-09-A] (RET 444-8, nrITS &
nrLSU seq'd.), J.
Justice s.n. [Tulloss 6-27-09-E] (RET 441-4);
ca. Camdenton, Ha Ha Tonka St.
Pk., Turkey Pen Hollows [37.9697º N/ 92.7544º W,
317 m],
28.vi.2009 J. Justice s.n. [Tulloss 6-28-09-E]
(RET 441-6).
Franklin Co. - Meramec St. Pk.
[38.2173° N/ 91.093° W, 262 m], 12.vii.2015 Patrick
Harvey s.n. [mushroomobserver #209742]
(RET 697-5, nrITS & nrLSU seq'd.).
Jasper Co. - Reeds, 7462 Ivory Rd.
[37.2062° N/ 94.3354° W, 300 m],
14.vi.2014 Jon Shaffer s.n. [mushroomobserver
#167413]
(RET 691-2, nrITS & nrLSU seq'd.),
16.vi.2014 J. Shaffer s.n. [mushroomobsever
#171328]
(RET 695-10, nrITS & nrLSU seq'd.).
St. Louis Co. - Eureka, Chubb Trail [38.511° N/
90.58° W, 245 m], 22.vi.2014 P. Harvey s.n.
[mushroomobserver #168077]
(RET 640-4).
Ste. Genevieve Co. - W of Ste. Genevieve, Hawn St.
Pk. [37.8337° N/ 90.2416° W, 262 m], 9.vii.2011
Patrick Harvey s.n. (RET 477-8, nrITS-LSU
seq'd.).
NEW JERSEY—Mercer Co. - Washington Crossing
St. Pk. [40.307º N/ 74.8638º W, 60 m], 19.vii.2017
Igor Safonov s.n. (RET 801-7, nrITS & nrLSU seq'd.).
Morris Co. - Mendham,
Meadowoods Township Pk.
[40°47'31" N/ 74°38'43" W, 214 m], 12.vii.2014 NJMA foray
participant s.n. [Nina Burghardt 1-14] (RET 668-2;
nrITS & nrLSU seq'd.).
NORTH CAROLINA—MacDowell County - near
Little Switzerland, Blue Ridge Pkwy, 20.viii.2016
Tim Geho s.n. [Tulloss 8-20-16-B] (RET 732-8,
nrITS-nrLSU seq'd.).
Swain Co. - unkn. loc., 7.vii.2019 Michael Weese s.n.
(RET 867-7, nrITS-LSU seq'd.).
Wake Co. - Raleigh,
Umpstead State Park [35.8725º N/ 78.761º W, 125 m],
25.vii.2016 Geoff Balme s.n. [mushroomobserver
#245339]
(RET 765-10, nrITS & nrLSU seq'd.),
4.vii.2017 G. Balme s.n. [mushroomobserver
#280813]
(RET 799-6, nrITS-LSU seq'd.), 9.viii.2018
G. Balme s.n. [mushroomobserver
#326560]
(RET 874-6, nrITS-LSU seq'd.).
VIRGINIA—Culpeper Co. - unkn. loc.
[38.53° N/ 78.15° W, 182 m] 13.viii.2018 Penny Firth
s.n. [mushroomobserver
#327443]
(RET 844-7, IT2-nrLSU seq'd.). |
| discussion |
This species is assigned to the provisional subsection
Penetratrices. Summary data concerning
this group can be found on the techtab of the taxon
page for Amanita
penetratrix.
Distinguishing Amanita justicei and
A. penetrans with
apparently constant character differences in nrLSU
gene
The nrITS sequences for these two species are
difficult to derive and are confusingly similar and
often contain a number of ambiguities.
We find that there are five features in the nrLSU gene
that, together, distinguish the two taxa. To
find these taxa we created a 2,021 character alignment
comprising all nrITS and nrLSU sequences obtained to
date (9 Nov. 2019) for the either of the two
species.
It is important to note that since deriving a
sequence containing the entirety of nrLSU has been
possible for us only once in the case of the two
species in question, no comparison could be made for
the first 444 characters of the longest sequence in
the alignment. The nrLSU gene begins
(with "TCTGAACTCAAATCA") at character 533 of the
alignment.
The distinguishing
differences between the two species and related
positioning information in the alignment
follow:
-
char. 614:
T (justicei), G (penetrans)
-
char. 1191:
T (justicei), A (penetrans)
-
chars. 1270-1272:
TTT (justicei), TT (penetrans)
-
char. 1936
C (justicei), T (penetrans)
-
char. 1939
A (justicei), T (penetrans)
Previously, this species has been referenced on this
site and in RET's correspondence and draft documents
as "Amanita sp-A03," "A. sp-A07,"
and "A. keesii." |
| citations |
—R. E. Tulloss and L. V. Kudzma |
| editors |
RET |
|
Spore data sets and their composite