| name |
Amanita friabilis - North America |
| author |
(Karst.) Bas. 1974. A rare but widespread Amanita
associated with Alnus. Travaux mycologiques dédiés
à R. Kühner, numéro spécial Bull. Soc. Linn. Lyon:
17-23. |
| name status |
nomen acceptum |
| english name |
"Alder Ringless Amanita" |
| etymology |
Alaska + -ensis ("occurring in") |
| GenBank nos. |
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| 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 based on original research of
J. M. Kranabetter,
L. V. Kudzma, and R. E. Tulloss. Part of the
molecular work was done at the Univesity of British
Columbia. |
| pileus |
?? mm wide,
??; context
??; margin with
very short striations; universal veil as
small, grayish, crumb-like, friable warts. |
| stipe |
??, decorated with friable,
gray material of the universal veil; context
??; exannulate;
universal veil gray, friable. |
| odor/taste |
Odor and taste not recorded. |
macrochemical
tests |
none recorded. |
| partial veil |
absent. |
| lamella edge tissue |
sterile. |
| basidiospores |
[60/2/1] (8.8-) 10.0 - 12.5 (-14.0) × (6.8-) 7.2 - 9.2 (-9.5) µm, (L = 11.2 - 11.3 µm; L’ = 11.2 µm; W = 7.9 - 8.7 µm; W’ = 8.3 µm; Q = (1.13-) 1.20 - 1.60 (-1.71); Q = 1.28 - 1.43; Q’ = 1.36), hyaline, colorless, inamyloid, thin-walled, smooth, broadly ellipsoid to ellipsoid, occasionally elongate or subglobose, adaxially flattened, sometimes swollen at one end; apiculus sublateral, cylindric; contents guttulate; whitish in deposit. |
| ecology |
Alaska, U.S.A.: In small groups. At 300 m
elev. In
old growth forest of Picea glauca,
Populus tremuloides, and Betula
papyrifera. British Columbia (Canada):
??.
Washington: In small groups
with Alnus and Abies alba or near to lake
with Picea and Tsuga. |
| material examined |
CANADA: BRITISH
COLUMBIA—?? - ca. Smithers,
Smithers Community For. [54°46’ N/ 127°10’W, 850 m],
24.vii.2005 J. M. Kranabetter
s.n. (UBC F28705; RET 688-7 nrITS seq'd.).
U.S.A.: ALASKA—Fairbanks
North Star Borough - S of Fairbanks, milepost 18 George
Parks Hwy., Bonanza Creek Experimental For.,
4.viii.1989 S. L. Stephenson 5394C (RET 044-2,
nrITS seq'd.).
WASHINGTON—Klickitat? Co. - Gifford
Pinchot Nat. For., N of Columbia Gorge, ca. Trout Lk.,
Mosquito Lk., 29.ix.2012 Buck McAdoo 337 (RET 675-3,
nrITS & nrLSU seq'd.).
Skamania Co. - Gifford Pinchot
Nat. For. Big Mosquito Lk. [46.128° N/ 121.758° W,
1189 m], 11.viii.2013 Sava Krstic
SAK-2013-00811-2 [mushroomobserver no.
142398]
(RET 573-2, nrITS & nrLSU seq'd.). |
| discussion |
The spores of North American material are extremely
similar to those of the Alnus-associated
European material:
Based on an nrITS sequence in the UNITE database,
the present species may also occur in Greenland.
The latter material was cataloged under the name
A.
friabilis.
On the other hand, some Norwegian material determined by
C. Bas as A. friabilis (as well as Estonian)
material determined as that species and having an nrITS
sequence in UNITE) seems to be ???. |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite