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 | ||||||||||||||||||||||||||||
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name | Amanita friabilis - North America |
name status | nomen acceptum |
author | (Karst.) Bas |
english name | "Alder Ringless Amanita" |
images | |
photo |
J. M. Kranabetter - (1) Smithers Community Forest,
British Columbia, Canada. (UBC F28705;
RET 688-7) Sava Kristic - (2) Big Mosquito Lake, Gifford Pinchot National Forest, Skamania County, Washington, U.S.A. (RET 573-2). [Note: Original image may be found on www.mushroomobserver.org, here. |
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.