Please see the data collected on the technical tab of
this page, for the time being.
—R. E. Tulloss
Boonprat. and Parnmen. 2016. Fungal Diversity 78: 136.
gleocystidium, versiform cystidia which have
granular or guttulate content + -osus,
[Note: The name is based on a misinterpretation of
the tissue of the hymenium and a fundamental
misunderstanding of the nature of the lamella edge
tissue in Amanita. A name is not
invalidated because it provides
an incorrect description.
This name is invalidated for another reason.—ed.]
28.v.2012 collector SRRT Team from Bureau of Epidemiology, Department of Disease Control of Ministry of Public Health (BBH 31903)
National Institute of Health, Dept. of Medical Sciences, Ministry of Public Health,
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
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 the
protolog of the present taxon.
protolog: 22 – 45 mm wide at
first, convex to parabolic when young, expanding to
applanate with age, sometimes depressed, sticky,
moist, from dark brown 8F5–8 at disc to grayish
at margin when young; olive yellow 2–3C–E6–8
at disc to yellowish white 2–3A2 at margin with
age, sometimes dark brown 8F5–8 at disc to
grayish yellow 1A3–5 at margin; context
off-white, 2–3 mm thick, soft and moist;
margin sulcate-striate and even; universal
veil not described.
protolog: free, broad?, average?,
sub-distant, yellowish white 2–3A2; lamelluae
of two lengths.
[Note: Because of the species' being assignable to
Amanita based on inamyloid
spores and stipes that are not totally elongating,
is probable that the lamellulae are truncate.
The figures showing vertically sectioned fruiting
bodies seem to show lamellae cut at an angle during
sectioning (or are stylized drawings) and apparently
do not show lamellulae. It is unclear what is
meant by the words "broad" and "average" in this
protolog: 75 – 100 × 6 – 9
mm, pale orange to orange-white 5A2-3 with grayish
orange striae [?fibrils ?stains]
after bruising, longtitudinal striate, central,
narrowing upward, with clavate-bulbous
base; context hollow; partial veil
single-layered, pale yellow to brown,often
disappearing with age, infrequently present at
mid-stipe [at what stage(s) of
universal veil constricted[?],
white, persistent, with flaring limb margin, with
ragged limb edge [per image].
[Note: Areas marked where clarification of
terminology seems needed.—ed.]
[Note: The pileipellis of an Amanita may
from absent to poorly differentiated to comprising
one or two well-defined
layers of interwoven, subradial hyphae,
with or without intimate connections to the interior
of the universal veil and (when there are two layers
of the pileipellis proper) with the uppermost layer
more or less strongly gelatinized. Significant
variation exists within sections. The
anatomy of the pileipellis is associated with
sufficient character states to be of importance to
[Note: This tissue is inadequately described.
It is claimed to be dextrinoid. If this is
correct, it is a very unusual character. We
do not know of dextrinoid tissue associated with the
lamellae in section Amanita. This
observation should be checked. We do know of at
least one taxon which occasionally exhibits dextrinoid
contents of basidia; however, this species
mutabilis) is currently placed in
protolog: not adequately described.
[Note: Figures in the protolog show what is probably
an immature subhymenium as a rather frequently
branching structure of
uninflated to slightly inflated and occasionally
branched hyphal segments. Further comments are
[Notes: Bisterigmate basidia are unusual on a mature
hymenium in Amanita. Apparently,
the hymenial tissues depicted are immature.
The subhymenium is very likely to be immature
as well because its
individual elements are not yet inflated. In
species of section Amanita the subhymenium
is most frequently pseudoparenchymatous.
The original text reports the basidia are
"inamyloid." This is always true of Amanita
basidia; consequently, there is little use in
reporting it. One of the ways that amyloid
spores can be detected in difficult cases is to
view them against a background of basidia.—ed.]
[Notes on supposed cystidia: On every technical
tab of this site, there is a teaching topic
addressing the issue of cheilocystida in
Amanita—there are none.
The figures in the protolog of the present species
that purport to illustrate
configurations of cheilocystida and pleurocystida
show identical anatomy—basidioles
with or without guttulate content that is the
future content of spores. This is regularly
seen in Amanita.
All of the the supposed cystidia are shown
arising from a more or less immature subhymenium;
hence, none of the depicted groups of cells is
part of the sterile lamella edge tissue of an
protolog: On pileus: not described.
On stipe base:
filamentous hyphae not described;
inflated cells smooth,
hyaline, inamyloid, thin-walled, clavate (22 – 31 ×
3.5 – 7 μm) and broadly clavate to broadly
ellipsoid (14 – 28 × 6.3 – 11.5 μm).
[Note: By failing to provide orientation and
terminal position of the
inflated cells [acrophysalides] as well as
failing to indicate that
the lamella margin tissue was sterile and comprised
of cells with structure and purpose unique to
the schizohymenial development of amanitas, the
authors failed to demonstrate on morphological
grounds that the present species is an
[Note: Since no range of Q is provided, a sporograph
cannot be generated. In the protolog's
illustration of spores, two distinctly different
shapes are shown. In each case two spores are
drawn in apparent side view permitting measurements
to be made. The narrower spores measure
7.5 - 8.8 × 6.8 - 6.9 μm with
Q = 1.11 - 1.27 (subglobose to broadly ellipsoid).
The broader spores measure
8.8 - 9.1 × 8.5 - 9.1 μm
with Q = 1.0 - 1.03 (globose). Since the
measurements came from two specimens and the
drawings represent observations on the holotype, it
appears that the holotype may be a mixed
The holotype should be re-evaluated taking into
consideration the nrLSU sequence which is
the holotype. That sequence may be the only
data available for the purpose of correcting
the protolog, which seems to be a mixture of
descriptions of two distinct species.
See "discussion" data field, below.—ed.]
protolog: In mixed forest.
Kao Distr. - Na Sang Tambon, 28.v.2012 SRRT Team,
Bur. Epidemiology (Dept. Disease Control, Ministry of
Public Health) (holotype, BBH31903).
This species was based on four collections made as
part of the investigation into an amatoxin
poisoning (Parnmen et al.
The original report identified the
poisonous taxa involved in a series of poisonings
due to mushroom ingestion in Thailand. These
taxa were all species of section Phalloideae
as identified through sequences derived from the
material collected in each poisoning case.
One case yielded additional material not belonging
in section Phalloideae. These collections
became the original material of the present species
(Parnmen et al.
Comparison of the four nrITS sequences derived from
the four collections of original material indicates
that the holotype is 5±% distant
from the other three collections of original
Pairwise comparisons of the latter show that their
genetic distance from each other varies from 0 to
0.3%. This data suggests that they represent
a distinct species; and we have excluded them from
the collections in this treatment and consider them
to be non-conforming paratypes. The excluded
collections have the herbarium accession numbers BBH
31901, BBH 31902, and BBH 31908; they were all
collected by the same team and at the same place and
date. GenBank accession numbers apparently
these collections are KT213717, KT213718, and
Based on the line-drawings of A.
gleocystidiosa anatomy in the protolog other
observations are possible. If the authors are
following normal conventions in titling the
relevant figure (op. cit. fig. 103), then all of the
images depict basidiomes and microanatomy of
holotype material. If this is true, then it
appears that the holotype could be a mixed collection and
should be re-evaluated thoroughly. Two sets of
spores are depicted (see above). They are
differences of size and shape. There are two
different forms of basidiomes. The basidiome
a depressed pileus has an apparent limbate
veil remnant attached to the bulb of the stipe.
The differences among the basidiomes (including
cap pigmentation) may distinguish taxa rather than
differences in maturity of a single taxon.
Note that none of the caps depicted in the cited
figure are completely opened.
—R. E. Tulloss
Information to support the viewer in reading the content of "technical" tabs
can be found here.
Boonprat. & Parnmen
Spore data for collections provisionally identified as: Amanita gleocystidiosa Boonprat. & Parnmen
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.