| name |
Amanita myrmeciae |
| author |
Tulloss, Kudzma & Albertella nom. prov. |
| name status |
nomen provisorum |
| english name |
"Bull Ants' Ringless Amanita" |
| etymology |
"belonging to the Myrmecia ('Bull Ants')" |
| 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 |
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 derived from
collection annotations and photographs of L.
Albertella, molecular studies of L. V. Kudzma, and
other original research of R. E. Tulloss. |
| pileus |
62 mm wide, light brown to brown, convex, smooth,
dull; context white except for narrow gray
region immediately below pileipellis, 6 mm
thick above stipe, thinning evenly for two-thirds
to three-quarters of gill length from stipe, then
membranous to pileus margin;
margin striate (0.3±R),
nonappendiculate;
universal veil as single patch, membranous,
white, detersile. |
| lamellae |
free to receding, close, white to cream in mass,
white in side view, projecting below edge of pileus,
with white minutely fimbriate
edge, 6.5 - 8.5 mm broad,
broadest at one-third to one-half of length
from stipe; lamellulae truncate to
subtruncate, rather common (not between every pair
of otherwise adjacent lamellae), of diverse lengths,
unevenly distributed. |
| stipe |
56 × 8 mm, white, subcylindric, largely undecorated
except for closely spaced lines of lamella edge
material near apex; context stuffed with
rather densely packed longitudinally oriented
white fibrils, possibly becoming hollow, with
central cylinder 1.5 mm wide; exannulate;
universal veil as proportionately rather thick,
cupulate/saccate volva, white, short and broad,
flaring, 16.5 × 19 mm, with limb 1+
mm thick at mid-height. |
| odor/taste |
Odor lacking. Taste not recorded. |
macrochemical
tests |
none recorded. |
| basidia |
50 - 59 × 15.5 - 18.0 μm, 4- and rarely 2-sterigmate,
with sterigmata up to 6.5 × 2.5 μm, with
basidia arising from
??.
Clamps not observed at bases of basidia. |
| lamella edge tissue |
sterile. |
| basidiospores |
RET: [11/1/1] (8.6-) 9.0 - 11.2 (-12.5) ×
(7.6-) 8.0 - 10.5 (-11.4) μm, (L =
10.6 μm; W = 9.6 μm; Q = 1.06 - 1.18;
Q 1.10), colorless, hyaline, thin-walled,
smooth, inamyloid, subglobose, adaxially flattened;
apiculus sublateral, cylindric;
contents mono- to multiguttulate; color in
deposit not recorded.
[Note: The sole
specimen from which spores were measured is immature
(see "ecology" and
"discussion" data fields, below) and
spores might be expected to be larger or smaller
in more mature material.—ed.] |
| ecology |
RET: In soil in which Bull Ants
(Myrmecia spp.) live, in lawn ca. 8 m from
Eucalyptus. This species is a food
sought out by the Bull Ants. Most basidiomes
are eaten before they reach maturity. |
| material examined |
RET: AUSTRALIA: NEW SOUTH
WALES—City of Lithgow, Blue Mountains,
Little Hartley [33.5599° S/ 150.2021° E, 821 m], 26.iii.2011
Lucy Albertella s.n. [mushroomobserver
#64743]
(RET 473-8, nrITS segm. & nrLSU seq'd.),
11.xii.2011 Lucy Albertella s.n.
[mushroomobserver
#84440]
(RET 495-10, nrITS segm. & nrLSU seq'd.),
23.ii.2015 L. Albertella s.n. [mushroomobserver
#199598]
(RET 687-7, nrITS segm. & nrLSU seq'd.). |
| discussion |
The single specimen of RET 495-10
which is the basis of the above description was
incompletely mature when dried. This
makes the material
difficult to compare with the six species of section
Vaginatae described
by Wood (1997).
We believe we have A.
punctata sensu A. E. Wood from the same
site as the present speciess and, hence,
can say given our interpretation of Wood's species,
the present species is distinct from it both
morphologically and genetically.
Amanita
pallidobrunnea has broadly ellipsoid
to ellipsoid spores; for this reason it is
distinguishable from the present species.
Amanita
sordidobubalina is unusual among the
Vaginatae treated by Wood because of
having yellow tints to the pigment on the
pileus. This also distinguishes A.
sordidobubalina from A. myrmeciae.
Amanita
albovolvata has gills and volva that are
or become gray; spores that are broadly ellipsoid to
ellipsoid; and a stipe with gray, zebroid
decoration.
Amanita subvaginata sensu A. E. Wood is
apparently a species of section Vaginatae
rather than section Amanita, which is the
probable home of the true species.
...t.b.d.
Amanita
vaginata sensu A. E. Wood
has a cap dominated by shades of gray, larger
spores, and a stipe that is longer and
proportionately much narrower.
RET 495-10 is immature and yielded only
11 measurable spores from two sections.
This species is on of those in section Vaginatae
that share an unusual 5'-motif for the nrLSU
locus.
The majority of agaricoid amanitas and some sequestrate
species exhibit the most common for of this
motif—TTGACCTCAAATCA. The variant motif for
taxa of the above-cited group of taxa in the
Vaginatae contains a single character, "C,"
between the first two characters of the dominant
form—TCTGACCTCAAATCA.
The reader may wish to refer to several other taxa of
this morphologically diverse group:
A. cinderella,
A.
chiricahuana,
A. drummondii,
A. minnesorora,
A. penetratrix,
etc. For the current list of taxa in this group,
see the latter page.
The species was previously given the temporary
code name "sp-AUS06" on this site. RET 473-8
is immature (preserved as a barely opening button). |
| citations |
—R. E. Tulloss, L. V. Kudzma, and L. Albertella |
| editors |
RET |
|
Spore data sets and their composite