11.x.2007 M. Diduch & B. Dentinger (paratype, TRTC156902)
J.-M. Moncalvo et al., Royal Ontario Museum, Ottawa
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 not from the protolog of the
present species or from (Lamoureux
based on the notes and photographs of collectors and
original research of RET.
protolog: 40 – 100 mm wide,
olive-yellow, straw-yellow, bronze, olive brownish
to brown-black, then tinged with olive or
margin, at times darker in the center and over
inner ends of marginal striations, ovoid to rounded
conic at first, then planar with an umbo, smooth;
margin striate (0.15 - 0.35R),
nonappendiculate; universal veil often as
small to large grey or orange-grey
[Note: Text supplemented from
Lamoureux (2006): 40 - 100 mm wide, rounded conic at
first, then plano-convex, with umbo, with margin
at first, otherwise having irregular blotches of
varied pigmentation (olive-yellow, with or without
orange tint away from the center and, often darker to
fuscous (predominantly toward the center);
context whitish; margin striate;
universal veil occasionally absent, otherwie
in irregular warts and small patches, white at first
becoming gray with age, felted-submembranous,
RET: ca. 65 mm wide, with pigment irregularly
distributed in ill-defined blotches (white near
margin, light orangish tan, olivaceous (or grayish
yellow) tan, with darker brown near disc),
campanulate at first; context whitish,
unchanging, ca. 4 mm thick over stipe, thinning for
?? of radius, as
membrane at margin; margin nonappendiculate,
striate (0.15 - 0.25R) in young material), slightly
incurved at first; universal veil in
irregular patches irregularly disposed near disc,
sometimes confluent, submembranous-felted, pallid
at first, becoming gray.
double click in markup mode to edit.
protolog: free, subcrowded,
whitish to greyish or with salmon tint;
Lamoureux (2006): white, grayish, or with a salmon
RET: free with decurrent line on upper stipe,
subcrowded, orangish white or pinkish white in mass,
off-white in side view, 3 mm broad (young material);
lamellulae subtruncate, unevenly distributed,
of diverse lengths, plentiful. [Note: The
lamellae often become gray or grayish in age in
those taxa of the Vaginatae having a graying,
submembranous-felted-friable universal veil.—ed.]
protolog: 100 - 200 ×
8 - 17 mm, flocculose and white at first, typically
covered by chevron-forming rusty-orange
fibrils on whitish background when mature, cylindric;
context white, unchanging when cut or bruised;
exannulate; universal veil
friable, palce ochre to gray to grayish orange to
orange-grey to reddish rusty,
often in one or several strips or patches near stipe
base. [Note: Text supplemented based on
Lamoureux (2006): 100 - 200 × 8 - 17 mm, decorated with
fibrils in "flame" pattern (gray-brown, brown-olive,
or with orange tint; context whitish;
exannulate; universal veil as basal cup
(often orange-tan with age) and as ring of
submembranous-felted-friable fragments, above the stem
base, gray gaining orangish tint.
RET: 100 × 11 mm, white, narrowing upward, not
flaring at apex (young material), with dense
covering of raised white fibrils (young material)
becoming slightly orange-brown when touched or on
exposure, becoming darker brown with time;
context white, unchanging, hollow, with
central cylinder ca. 7 mm wide; exannulate;
universal veil as cupulate base, with
appressed patches on lower stipe, white at first,
becoming orangish tan at stipe base, with highest
point on patch ca. 22 - 25 mm from stipe base, ca.
1.5 mm thick, somewhat flexible at first, soon
protolog: Odor not
distinctive. Taste not
Odor indistinct. Taste not
RET: Odor lacking. Taste not
protolog: Suprapellis gelatinized; hyphae 2.5 - 6.0 μm
wide, radially orientated. Subpellis,
filamentous hyphae 4 - 12 μm wide; inflated cells
cylindrical to fusiform, 50 - 100 × 13 - 24 μm,
often in chains; vascular hyphae 7 - 10 μm
wide occasional. [Note: The inclusion of
inflated cells is unusual for a pileipellis in
section Vaginatae. These could be inlated
segments of hyphae or could be part of a
zone below the pileipellis proper. The
description should be reviewed.—ed.]
filamentous hyphae (4-) 5 - 12 μm wide, more or less
some inflated intercalary cells; acrophysalide
subfusiform to fusiform 40 – 110 × 10 – 33 μm often
in chains; vascular hyphae 7 - 10 (-12) μm wide,
rarely branching. [Note: Vascular hyphae
are rarely inflated. For one thing they have no
septa; so there are not intercalary cells. They
do spring leaks or break; and the material exuded is
difficult to differentiate from the rest of the
protolog: inflated cells
irregular to globose to subglobose 11 - 20 (-25) ×
(6-) 10 - 15 μm.
RET: pseudoparenchymatic (cellular);
protolog: 48 – 65 × 14 – 19 μm,
clavate, 4-sterigmate, with sterigmata up to 8.5 μm
long; clamps absent.
RET: 48 - 58 × 13.8 - 16.0 μm, 4-sterigmate, with
sterigmata up to 5.8 × 4.2 μm; clamps not observed.
protolog: filamentous hyphae
4.5 – 7.5 μm wide; inflated cells 25 - 60 μm wide,
singly terminal or in chains, subglobose to globose;
vascular hyphae rare to absent.
protolog: filamentous hyphae
4 - 13 μm wide away from surface, 3 - 5 (-6) μm wide
near or at surface; acrophysalides 150 - 350 ×
20 - 35 μm and in chains
[?sic] away from
surface, 50 - 90 (-120) × (12-) 16 - 23 μm and with
reddish brown intracellular pigment near or
at surface; vascular hyphae, occasional,
7 - 10 μm wide. [Note: Acrophysalides in
are singly terminal on filamentous hyphae except in a
very few species—predominantly the
of sect. Vittadiniae.—ed.]
composite of all data from material revised by RET:
[60/2/2] (7.2-) 9.5 - 11.4 (-13.5) × (6.5-) 8.5 -
10.7 (-13.5) μm, (L = 10.4 μm; L' =
10.4 μm; W = 9.4 - 9.8 μm;W' = 9.7 μm;
Q = 1.03 - 1.14 (-1.15); Q = 1.07 - 1.10;
Q' = 1.08), hyaline, colorless, smooth,
thin-walled, inamyloid, globose to subglobose,
often adaxially flattened; apiculus
sublateral, cylindric; contents mono- to
multiguttulate with additional small granules;
white in deposit.
protolog: Usually solitary, sometimes scattered
to gregarious, in stands of conifers (Abies, Picea,
Pinus, Tsuga) mixed with Betula, on sub-hydric to
mesic soil, never seen in plantations.
Common. In Abies forest including
Betula. July to September.
RET: Maine: Solitary. At ca. 65 m elev.
In dark loam over sandy-rocky soil in mossy forest
dominated by Picea glauca and including
Betula sp., Acer rubrum,
Vaccinium sp., Cornus canadensis, and
ONTARIO—Algonquin Provincial Park,
1.x.2007 M. Didukh and B. Dentinger (paratype,
TRTC156902, Genbank MG734655).
QUÉBEC—Lac-Beauport, Chemin de la
Chapelle, 22.viii.2010 H.
Matawinie Region. Co. Mun. - Rawdon,
9.viii.2003 Yves Lamoureux 3787 (holotype,
CMMF003787, GenBank MG734656),
Québec, Base de plein air La Découverte,
15. iii.2010 H. Lambert (paratype,
Sacré-Soeur-sur-le Fjord, Rivière Sainte-Marguerite,
fosses 3, 4, 5, 17.viii.2008 H. Lambert (paratype,
HL0257, Genbank MG734657).
Sacré-Soeur-sur-le Fjord, Parc Saguenay, 2015 H. Lambert
QUÉBEC—Matawinie Region. Co. Mun. - Rawdon,
9.viii.2003 Yves Lamoureux 3787 (holotype,
CMMF003787; isotype RET 521-8),
19.viii.2003 Y. Lamoureux 3463 (CMMF; RET 521-4,
MAINE—Washington Co. - Steuben, Eagle Hill
Inst., ca. lodge [44°27.573' N/ 67°55.914' W, 67 m],
26.viii.2014 Zaac Chavez s.n. [Tulloss 8-26-14-G]
A submembranous to friable volva that turns gray on exposure and aging places A. variicolor in a group of taxa near A. rhacopus in section Vaginatae. A third species from Quebec is known for this group—A. sp-QUE03.
While species with globose to subglobose spores can be difficult to compare by means of sporographs, such a comparison of the three named species is offered here:
The multi-colored pileus with colors altering as the basidiome matures is reminiscent of the pileus of A. xanthomitra; however, the coloration in the latter species is associated with distinct, ring-like zones, rather than the colors in vaguely bordered areas giving the blotchy appearance of the present taxon.
Translation of (Lamoureux 2006) from French by RET, who is responsible for any errors.—R. E. Tulloss and Y. Lamoureux
Information to support the viewer in reading the content of "technical" tabs
can be found here.
Lamouruex ex Lamoureux in Lambert et al.
"Piebald Ringless Amanita"
1. Amanita variicolor, Eagle Hill Inst., Steuben, Washington Co., Maine, U.S.A. (RET 635-5)
2. Amanita variicolor, Eagle Hill Inst., Steuben, Washington Co., Maine, U.S.A. (RET 635-5)
Zaac Chaves - (1-2) Eagle Hill Institute, Steuben, Washington County, U.S.A. (RET 635-5)
Spore data for collections provisionally identified as: Amanita variicolor Lamouruex ex Lamoureux in Lambert et al.
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.