| name |
Amanita batonrougensis |
| author |
Tulloss, Kudzma, Wiedenf. & S. D. Russell |
| name status |
nomen provisorum |
| english name |
"Baton Rouge Ringless Amanita" |
| etymology |
Baton Rouge + -ensis (occurring in) |
| GenBank nos. |
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|
| intro |
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 marks other places in the text
where data is missing or uncertain.
The following material is based on postings, photographs,
and notes from the collector, molecular studies by Dr. Linas V. Kudzma
and other original research by RET. |
| pileus |
up to 83 mm wide, pale to moderate gray-brown, lacking
obvious discoloration or bruising,
campanulate at first, umbonate and planoconvex in age;
context not recorded; margin long
tuberculate
striate (0.5-0.55R); universal veil absent. |
| lamellae |
free to receding, close, white, lacking descent tooth,
? - ? mm broad,
broadest at ?% of length, with edge concolorous and
decorated with fine pulverulence; lamellulade
truncate, of diverse lengths, unevenly distributed,
plentiful. |
| stipe |
up to 140 × 8 mm, with up to 60 mm inserted in
substrate, white near apex, pale gray to surface of
substrate, off-white with shaggy surface in substrate, narrowing upward, flaring at apex;
context not recorded; exannulate;
universal veil as saccate volva,
membranous, with exterior surface
whitish to pale beige,
up to 19 × 17 mm, proportionally brief, flaring above,
rounded below. |
| odor/taste |
not recorded. |
macrochemical
tests |
none recorded. |
| partial veil |
absent. |
| lamella edge tissue |
sterile. |
| basidiospores |
[70/3/2] (8.4-) 8.9 - 10.5 (-11.0) × (5.7-)
6.1 - 8.0 (-8.5) μm, (L = 9.4 - 9.6 μm;
L' = 9.5 μm;
W = 6.5 - 7.0 μm; W' = 6.8 μm;
Q = (1.19-) 1.24 - 1.52 (-1.72);
Q = 1.34 - 1.40: Q' = 1.37)
hyaline, colorless, thin-walled,
smooth, inamyloid, adaxially flattened; apicululs
sublateral, cylindric; contents dominantly
monoguttulate, and of "oil drop" type; white in
deposit. |
| ecology |
Louisiana: At 13-14 m elev. In dark loam with
young Quercus or in dark loan near Carya
illinoinensis. |
| material examined |
U.S.A.:
LOUISIANA—East Baton Rouge Parish -
Baton Rouge [30.4415° N/ 91.1087° W, 13-14 m], 21.v.2015
Logan Wiedenfeld s.n. [mushroomobserver
204749]
(RET 685-4, nrITS & nrLSU seq'd.), 10.vii.2017
Logan Wiedenfeld s.n. [mushroomobserver
#281566]
(RET 802-5, nrLSU seq'd.).
New Orleans - Audubon Pk. [29.9336° N/ 90.1256° W,
2 m], 4.ix.2018 L. Wiedenfeld s.n. [mushroomobserver
#331283]
(RET 844-1, nrITS-LSU seq'd.), 9.x.2018 L. Wiedenfeld
s.n. [mushroomobserver
#338038]
(RET 857-4, nrITS-LSU seq'd.).
MISSISSIPPI—Clay Co. - Montpelier, Jann &
Mike's Farm [33.7134º N/ 88.9469º W, 86 m], 8.vii.2017
David Tate 5925-37 [mushroomobserver.org #293003] (RET 810-9).
NORTH CAROLINA—Wake Co. - Raleigh,
Umstead St. Pk., 8.vi.2018 Geoffrey Balme s.n.
[mushroomobsserver
#319039]
(RET 858-3, nrITS-LSU seq'd.).
TEXAS—Brazos Co. - College Station,
Lick Creek Pk. [30.5151° N/ 95.6773° W, 77 m],
6.vi.2018 Alexey Sergeev s.n. [mushroomobserver
#318987]
(RET 820-7, nrITS-LSU seq'd.). |
| discussion |
The spore data demonstrates that the spore shape in
this species is similar to the shape of the
spores in other taxa in
Amanita
stirps Rooseveltensis—ranging
from broadly ellipsoid to ellipsoid. Comparisons
are provided in the following sporogaphs:
The present species was formerly called
"A. sp-LA01" on this site. |
| citations |
—R. E. Tulloss and L. V. Kudzma |
| editors |
RET |
|
