Amanita friabilis - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella

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name	Amanita friabilis
name status	nomen acceptum
author	(Karst.) Bas
english name	"Alder Ringless Amanita"
images	1. Amanita friabilis, Bavaria, Czech Republic. 2. Amanita friabilis, from the French Alps, France. 3. Amanita friabilis, from the French Alps, France. 4. Amanita friabilis 5. Amanita friabilis
intro	The description that follows is based on the collecting notes with collections in the Netherlands National Herbarium in Leiden and from observations supplied by prof. Pierre-Arthur Moreau (Univ. Lille).
cap	The cap of A. friabilis is 28^± (-70) mm wide, plano-convex, with a slightly depressed center, with a low umbo in the middle, brown, glabrous, thin-fleshed, with a sulcate-striate margin (25^± - 30% of the radius). The volva is present as dry, pruinose, densely set, persistent gray to whitish warts.
gills	The gills are crowded, just reaching the stem apex, narrowly adnate, and pale buff to whitish.
stem	The stem is 48^± (-140) × 6^± mm, hollow, pallid, with brownish squamules in places. The volva is present as brownish, wartlike remnants with a narrow, appressed, adnate vaginate volva.
spores	The spores measure 10.1 - 12.1 × 8.5 - 9.8 (-10.8) µm and are inamyloid and subglobose to broadly ellipsoid (rarely ellipsoid, sometimes obovoid). Clamps are absent at bases of basidia.
discussion	This species has only been found in moist soils in association with Alder (Alnus). It was originally described from Finland and is widely reported in Europe from west to east and, at least, from Finland and Scandinavia to southern France. For comparison, see Amanita basiana Tulloss & M. Traverso. A set of similar clampless species is listed under A. farinosa Schwein. within the range of Alder.—R. E. Tulloss
brief editors	RET

name

Amanita friabilis

author

(P. Karst.) Bas. 1974. Bull. Soc. Linn. Lyon, No. Spéc., Trav. Déd. Kühner: 17.

name status

nomen acceptum

english name

"Alder Ringless Amanita"

synonyms

≡Amanitopsis vaginata subsp. friabilis P. Karst. 1879. Bidrag Kännedom Finlands Natur Folk 32: 547.

≡Amanitopsis friabilis (P. Karst.) Sacc. 1887. Syll. Fung. 5: 22.

≡Pseudofarinaceus friabilis (P. Karst.) Kuntze. 1891. Rev. Gen. Plant. 2: 868.

≡Vaginata friabilis (P. Karst.) Kuntze. 1898. Rev. Gen. Plant. 3(2): 539.

=Amanita alnicola Rouzeau & F. Massart in Rouzeau nom. inval. 1970 ["1967"]. Actes Soc. Linn. Bordeaux 104 sér. (9): 4. [Lacking designation of holotype. ICBN §37.1]

≡Amanita alnicola Rouzeau & F. Massart nom. inval. 1966. Actes Soc. Linn. Bordeaux 103(A3): 5. [?? ICBN §??]

=Amanita sternbergii Velen. 1920. České Houby 1: 192.

≡Amanita vaginata f. sternbergii (Velen.) Veselý. 1933. Ann. Mycol. 31(4): 296.

≡Amanitopsis sternbergii (Velen.) J. Favre nom. inval. 1960. Ergebn. Wiss. Unters. Schweiz. NatnParks 6 (Neue Folge): fig. 100. [Lacking full and direct reference to basionym. ICBN §33.2]

≡Amanitopsis vaginata var. sternbergii (Velen.) J. Favre. nom. inval. 1960. op. cit.: 566. [Lacking full and direct reference to basionym. ICBN §33.2]

The editors of this site owe a great debt to Dr. Cornelis Bas whose famous cigar box files of Amanita nomenclatural information gathered over three or more decades were made available to RET for computerization and make up the lion's share of the nomenclatural information presented on this site.

MycoBank nos.

308552, 278854

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.

accession	locus	voucher	source



KU248102	nrITS	26.viii.2006 Pierre-Arthur Moreau 06082601 (RET 395-5)	L. V. Kudzma, Annandale, NJ
KU248103	nrITS	26.viii.2006 Pierre-Arthur Moreau 06082602 (RET 395-10)	L. V. Kudzma, Annandale, NJ
KU248104	nrITS	26.viii.2006 Pierre-Arthur Moreau 06082603 (RET 396-1)	L. V. Kudzma, Annandale, NJ
KU248105	nrITS	2.ix.1982 Ö. Weholt 191182 (RET 278-2)	L. V. Kudzma, Annandale, NJ
KU248119	nrLSU	26.viii.2006 Pierre-Arthur Moreau 06082601 (RET 395-5)	L. V. Kudzma, Annandale, NJ
KU248120	nrLSU	26.viii.2006 Pierre-Arthur Moreau 06082602 (RET 395-10)	L. V. Kudzma, Annandale, NJ
KU248121	nrLSU	26.viii.2006 Pierre-Arthur Moreau 06082603 (RET 396-1)	L. V. Kudzma, Annandale, NJ

holotypes

A. sternbergii—PRC

lectotypes

A. friabilis—H

lectotypifications

A. friabilis—??Bas. 1974. op. cit.: 21.

type studies

A. sternbergii—Bas. 1982. Persoonia 11: 441, fig. 4(b-b').

selected illustrations

Zecchin. 2000. Boll. Gruppo Micol. G. Bresadola 43(2): 164.

intro

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 material.

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 not directly from the protolog of the present taxon or the protolog of one of its taxonomic synonyms and not cited as the work of C. Bas or another researcher is based upon original research by R. E. Tulloss.

pileus

protolog: universal veil covering pileus with sordid gray patches.

stipe

protolog: universal veil soon breaking up into sordid gray patches.

macrochemical
tests

none described.

basidiospores

send to graphing tool

Bas (1974): [180/17/10] (9.5-) 10 - 12.5 (-14.5) × (7-) 8 - 10 (-10.5) μm, (Q = (1.0-) 1.10 - 1.50 (-1.55); Q = 1.20 - 1.35), colorless, hyaline, inamyloid, subglobose to broadly ellipsoid to ellispoid, rarely globose; apiculus abrupt; contents mostly as single large guttule; white in deposit [per Rouzeau (1970: 3)].

Bas (1982) from holotype of A. sternbergii: [10/1/1] 10.2 - 12.1 × 8.5 - 9.8 (-10.8) μm, (Q 1.10 - 1.35; Q = 1.20), colorless, hyaline, thin-walled, inamyloid, subglobose to broadly ellipsoid, rarely ellipsoid, sometimes obovoid; apiculus medium-sized, abrupt, subtruncate; contents not described; color in deposit not recorded.

composite from all material revised by RET: [125/6/5] (8.4-) 9.5 - 12.8 (-17.8) × (6.6-) 7.4 - 9.9 (-11.5) μm, (L = 10.8 - 11.9 μm; L' = 11.2 μm; W = 7.9 - 9.0 μm; W' = 8.4 μm; Q = (1.06-) 1.13 - 1.62 (-1.89); Q = 1.23 - 1.43; Q' = 1.34), hyaline, colorless, smooth, thin-walled, inamyloid, subglobose to broadly ellipsoid to ellipsoid, infrequently elongate, sometimes swollen toward one end, predominantly adaxially flattened, rarely constricted, with "giant" spores sometimes present; apiculus sublateral, cylindric, often rather large proportionately; contents granular or dominantly monoguttulate with additional small granules; color in deposit not recorded.

ecology

Solitary to abundant. In Alnus bush or in moist Alnus thicket with some Betula and several taxa of Russulaceae or with Alnus by stream in rich Picea forest or with Alnus glutinosa.

material examined

Bas (1974): FINLAND: Pohjois-Savo, Lapinlahti, Rasila, 20.viii.1956 O. v. Schulmann (H); Etalä-Häme, Tammela, Heinämaa, 5.x.1879 P. A. Karsten 868 (lectotype, H); Tammela, Mustiala, 1.viii.1952 O. v. Schumann (H). FRANCE: GIRONDE—Mérignac, ca. Bordeaux, 1.ix.1966 C. Rouzeau s.n. (L, from putative type locality of A. alnicola). GERMANY: BRANDENBURG—Fresdorf, ca. Potsdam, 22.x.1968 D. Benkert s.n. (in herb. Benkert), 10.viii.1970 D. Benkert s.n. (in herb. Benkert). RHEINLAND—Eifel Gerolstein, 5.x.1971 F. Tjallingii s.n. [C. Bas 5730] (L). NETHERLANDS: LIMBURG—Nederweert, "Groote Moost," 15.x.1972 J. Frencken & G.-A. de Vries s.n. (in herb. Frencken; L). SWITZERLAND: GRAUBÜNDEN—Swiss Nat. Pk., Bugliauna et Val Trupchun, 31.viii-1.ix.1975 J. Favre 755 (CHUR).

Bas (1982): CZECH REPUBLIC: CENTRAL BOHEMIA—Prague, Mnichovice s.d. Velenovsky s.n. (holotype of Amanita sternbergii, PRC). [Note: The collection cannot be dated later than 1920.—ed.]

RET: AUSTRIA: Hauswandel, ca. 5 km SSE of Klagenfurth, 7.x.1978 C. Bas 7422 (L; RET 278-3). FRANCE: SAVOIE—le Bourget - en Huile “les Berthollets,” 26.viii.2006 Pierre-Arthur Moreau 06082601 (LIP; RET 395-5, nrITS seq'd.); en Huile-Marais des Bords du Gelon, 26.viii.2006 Pierre-Arthur Moreau 06082602 (LIP; RET 395-10, nrITS seq'd.), 06082603 (LIP: RET 396-1, nrITS seq'd.). GERMANY: BRANDENBURG—ca. Potsdam, Fresdorf, 22.x.1968 D. Benkert s.n. (L; RET 278-4). NORWAY: HEDMARK—Ringsaker, Furnesåsen, Putten [UTM_ED50 (PN10-11,53-54)], 22.ix.1995 G. Gulden 91/95 (0 58532). OPPLAND—Gjövik komm., Svennesvollene naturreservat [NN 8760 (1816I)], 24.vii.1985 T. E. Brandrud & J. Stordal 24310 (O 58532). ÖSTFOLD—Hvalar, Kirköy, 2.ix.1982 Ö. Weholt 191182 (L; RET 278-2, nrITS seq'd.).

[Note: The Austrian material is genetically distinct and will be moved.—ed.]

discussion

The entire protolog is as follows: "Hatten fullsatt med breda, oregelbundna, smutsgrå fjäll; slidan snart upplöst till fjäll."

Material from the intended type locality of A. alnicola (which has no nomenclatural significance) is located in both L and in the herbarium of Soc. Linn. Bordeaux.

citations

—R. E. Tulloss

editors

RET

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name	Amanita friabilis
name status	nomen acceptum
author	(Karst.) Bas
english name	"Alder Ringless Amanita"
images	1. Amanita friabilis, Bavaria, Czech Republic. 2. Amanita friabilis, from the French Alps, France. 3. Amanita friabilis, from the French Alps, France. 4. Amanita friabilis 5. Amanita friabilis
photo	Photos: Dr. Jan Borovička (first row, leftmost, Bavaria, Czech Republic) Dr. P.-A. Moreau (first row, 2nd & 3rd from left, French Alps).

name	Amanita friabilis
bottom links	[ Keys & Checklists ]

name	Amanita friabilis
bottom links	[ Keys & Checklists ]

Spore data for collections
provisionally identified as: Amanita friabilis (Karst.) Bas

Spore data sets and their composite

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.

basidiospore definition

Spore Measurements by Collection

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