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

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name	Amanita volvata
name status	nomen acceptum
author	(Peck) Lloyd
english name	"American Amidella"
images	1. Amanita volvata, Hightstown, Mercer Co., New Jersey, USA. 2. Amanita volvata 3. Amanita volvata 4. Amanita volvata
intro	double click in markup mode to edit.
spores	The spores measure (5.8-) 8.4 - 12.2 (-14.2) × (4.5-) 5.2 - 7.2 (-9.0) µm and are mostly ellipsoid to elongate (a few are broadly ellipsoid or cylindric) and amyloid. Clamps are not found at the base of basidia.
discussion	This species is the type species of Amanita section Amidella. Amanita volvata is known from eastern North America [Prov. Nova Scotia (?) southward to Louisiana and Texas and westward to the limit of distribution of oak]. The species of southern California that has been called A. volvata is "A. fallax Tulloss & G. Wright nom. prov." In eastern North America, A. volvata is the rather large, robust species with densely floccose upper stipe and subglobose to broadly ellipsoid, sack-like volva. There are a number of other taxa of Amanita section Amidella occurring in the same region—described (A. peckiana Kauffman in Peck and Amanitopsis volvata var. elongata Peck) and undescribed. Two that have received some discussion in correspondence, keys, and at forays are my species numbers 41 and 50. The species most often depicted in field guides as A. volvata is the significantly smaller Amanita species 41. See the checklist/picturebook for the the New Jersey Pine Barrens etc. or the key to Amanita for eastern North America (work in progress). [It is a PDF file requiring Acrobat Reader version 4.0 or later.] While a few American taxa in section Amidella can be distinguished macroscopically, after 25 years of concentration on this section, my own rate of accurate field identification of medium-sized specimens of all taxa ranges from about 60 to 80% correct. Micoscopic characters are key to certainty of determination in Amanita section Amidella. Amanita volvata is similar to a large number of other taxa of section Amidella in its bruising and staining reactions. In Asia, see A. avellaneosquamosa (S. Imai) S. Imai, A. clarisquamosa (S. Imai) S. Imai in E.-J. Gilbert, and A. duplex Corner & Bas. Many references to A. volvata in the Asian literature refer to one of the first two listed. For determination of similar taxa in sub-Saharan Africa, see A. fulvopulverulenta Beeli and A. goossensiae Beeli (and its possible synonym A. fulvosquamulosa Beeli). In Europe and the Mediterranean region, see A. curtipes E.-J. Gilbert, A. lepiotoides Barla, A. ponderosa Malençon & R. Heim in Malençon, and A. valens (E.-J. Gilbert) Bertault. The Australian taxa probably assignable to Amanita section Amidella are not well known to me.—R. E. Tulloss
brief editors	RET

name

Amanita volvata

author

(Peck) Lloyd. 1898. Mycol. Writings 1 (Compil. Volvae): 9, 15.

name status

nomen acceptum

english name

"American Amidella"

synonyms

≡Agaricus volvatus Peck. 1872. Rep. (Annual) New York State Mus. Nat. Hist. 24: 59.

≡Amanitopsis volvata (Peck) Sacc. 1887. Syll. Fung. 5: 23.

≡Amidella volvata (Peck) E.-J. Gilbert. 1940. Iconogr. Mycol. (Milan) 27, suppl. (1): 77, tab. 26 (figs. 1??, 2-6), tab. 27 (fig. 1??).

non Amanita volvata sensu Boedijn. 1951. Sydowia 5: 322.

=Amanita agglutinata (Berk. & Curtis) Lloyd sensu Murrill. ??. ??: ??.

=Amanita corticelli (Valenti-Serini) L. Krieg. sensu L. Krieg. 1927. Mycologia 19: 308, pl. 32 (fig. 1). [Misapplication. Collections cited by Krieger (MICH) have been examined by Tulloss.]

≡Volvaria corticelli Valenti-Serini. 1868. Tratt. Fungh. Sospett. Velenos. Terr. Senese: 5, pl. 8. [Neville and Poumarat (2001. Micologo 33(100): 17) argue that this is a synonym of Amanita ovoidea (Bull. : Fr.) Link .]

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.

173945, 162855, 284142

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
AF024485	nrLSU	31.viii.1986 Steve Harsch 304 (RET 092-9)	Weiss et al. (1998), Lehrstuhl für Spezielle Botanik und Mykologie, Bot. Int., Univ. Tübingen

holotypes

NYS (implicit)

type studies

Jenkins. 1978a. Mycotaxon 7: 43.
Tulloss, here.

revisions

Tulloss, here.

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 and not cited as the work of another researcher is based on original research by R. E. Tulloss.

basidiospores

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from type study of RET: [100/5/1] (6.5-) 8.5 - 11.8 (-13.0) × (5.2-) 5.5 - 7.5 (-8.5) μm, (L = 9.2 - 10.8 μm; L' = 10.1 μm; W = 6.0 - 6.8 μm; W' = 6.4 μm; Q = (1.25-) 1.34 - 1.81 (-1.91); Q = 1.52 - 1.66; Q' = 1.57), hyaline, colorless, smooth, thin-walled, amyloid, ellipsoid to elongate, rarely broadly ellipsoid, sometimes expanded at one end, adaxially flattened; apiculus sublateral, cylindric; contents guttulate; ?? in deposit.

composite data from all material revised by RET: [1223/61/45] (5.8-) 8.4 - 12.2 (-14.2) × (4.5-) 5.2 - 7.2 (-9.0) µm, (L = (8.6-) 9.0 - 11.8 (-12.4) µm; L’ = 10.3 µm; W = (5.1-) 5.5 - 6.8 (-7.6) µm; W’ = 6.2 µm; Q = (1.16-) 1.35 - 1.94 (-2.45); Q = (1.39-) 1.48 - 1.93 (-2.02); Q’ = 1.65), hyaline, colorless, thin-walled, smooth, amyloid, ellipsoid to elongate, rarely cylindric, sometimes expanded at one end, adaxially flattened; apiculus sublateral, cylindric or very narrowly truncate conic; contents guttulate; white in deposit.

ecology

Solitary to gregarious. Nova Scotia: In humus or sand under Pinus strobus and Tsuga canadensis or in mixed deciduous woods. Québec: In mixed woods near P. strobus, Betula, and Picea. New Jersey: Under mixed deciduous trees including Quercus spp. or under T. canadensis, Quercus, Fagus, and Betula. Ohio: Under hardwoods. North Carolina: In old T. canadensis forest. Pennsylvania: In deciduous woods dominated by Quercus. Virginia: In mixed forest including P. strobus, Quercus, and Carya. Mississippi: in damp soil in hardwood, river bottom lands. Texas: In humus in Pinus-Quercus woods.

material examined

from type study of Jenkins (1978a): U. S. A.: NEW YORK— Rensselaer Co. - Greenbush, s.d. C. H. Peck s.n. (holotype, NYS, mixed collection).

RET: CANADA: NOVA SCOTIA—Annapolis Co. - Clarence, 9.viii.1931 K. A. Harrison 166 (ACAD as A. peckiana; DAOM 110616 & 214743 (2 boxes) as A. agglutinata). Kings Co. - Kentville Ravine, 31.vii.1966 H. L. Stewart HS 7 (ACAD 10906). QUÉBEC—Région Lanaudière - L’Assomption, E of St-Jérome & NW of Mascouche, La Plaine, 1.viii.1990 Carlo Farnesi s.n. [Y. Lamoureux 1199] (CMMTL; RET 078-6). U.S.A.: CONNECTICUT—New London Co. - Mystic, 4.viii.1988 John Cooke 8-4-88-JC1 (RET 125-1). Middlesex Co. - East Haddam, Devil’s Hopyard St. Pk. [41°28'32" N/ 72°20'25" W, 72 m], 19.ix.1998 L. Chernoff s.n. [R. E. Tulloss 9-19-98-C] (RET 288-1). Tolland Co. - Hebron, The Hemlocks Nature Educ. Ctr. [41°37’11” N/ 72°23’22” W, 145-160 m], 3.ix.2011 COMA2011 participant s.n. [RET 9-3-11-P] (RET 489-7). DISTRICT OF COLUMBIA—Washington, 1906 F. J. Braendle s.n. (NYS, as "A. coccola Scop."). GEORGIA Fulton Co. - unkn. loc., 25.viii.2011 Timothy Kewin s.n. [mushroomobserver.org #94872] (RET 509-8). IOWA—Johnson Co. - Iowa City, City Park, 5.ix.1926 G. W. Martin s.n. (ISC 382769), 21.ix.1926 G. W. Martin s.n. (ISC 382729), 17.vii.1941 G. W. Martin s.n. (ISC 382802). LOUISIANA—St. Tammany Parish - Pearl R. Wildlife Mgmt. Area, Honey Isl. Swamp Nature Tr., 31.viii.1986 Steve Harsch 304 (RET 092-9), 305 (RET 093-6). MAINE—Penobscot Co. - Old Town, Pushaw Lk. area, 31.vii.1969 R. L. Homola 3144 (MAINE). MARYLAND—Washington Co. - ca. Emmitsburg, Blue Ridge Mtns., Friends Crk., 20.viii.1923 L. C. C. Krieger [Kelly 1415] (MICH). Unkn. Co. - Frederick or Washington Co., Blue Ridge Mtns., no loc., x.1923 Dr. F. Y. Wilkens s.n. [Kelly 1545] (MICH). MASSACHUSETTS—Franklin Co. - Mt. Toby, 13.ix.1960 J. W. Groves s.n. (DAOM 71779 as "Amanitopsis agglutinata"). Middlesex Co. - Groton Conservation Area, 19.viii.1989 Yala s.n. [Tulloss 8-19-89-B] (RET 245-4). MISSISSIPPI—Jackson Co. - Pascagoula R. Wildlife Mgmt. Area, 16.vii.1987 Paul Kroeger s.n. [Tulloss 7-16-87-E] (RET 005-5). NEW HAMPSHIRE—Rockingham Co. - Rye, 31.vii.1975 Van Cotter s.n. (MICH). NEW JERSEY—Mercer Co. - Hightstown [40°15’57” N/ 74°31’04” W], 26.vi.1981 D. C., M. H. & R. E. Tulloss 6-26-81-B (RET), 22.vii.1981 R. E. Tulloss 7-22-81-A (RET 169-5), 8.viii.1981 R. E. Tulloss & M. A. King 8-8-81-A (RET 162-10), 13.vii.1982 D. C., M. H. & R. E. Tulloss 7-13-82-A (RET 472-9), 10.viii.1982 D. C. & R. E. Tulloss & M. A. King 8-10-82-B (RET 341-9), 5.viii.1983 D. C. & R. E. Tulloss 8-5-83-A (RET 228-4), 16.viii?.1984 D. C. & R. E. Tulloss ?8-16-84-D (RET). Morris Co. - Hackettstown Reservoir, 25.vii.1984 Jim Richards s.n. [Tulloss 7-25-84-B] (RET 232-8); btwn. Mendham & Chester, Meadowood Twp. Pk., 2.viii.1981 J. Richards NJMA-8-2-81-C1 (RET 045-5). Warren Co. - Worthington St. For., 18.viii.1982 O. K. & H. H. Miller [OKM 20052] (VPI). Unkn. Co. - unkn. loc., 3.viii.1899 E. B. Sterling 170 & 171 (NYS). NEW YORK—Albany Co. - Karner, September C. H. Peck s.n. (NYS in mixed collection); Menands, August C. H. Peck s.n. (NYS). Nassau Co. (Long Isl.) - Hicksville, 1.viii.1986 Aaron Norarevian s.n. [Tulloss 8-1-86-AN1] (RET 240-3). Rensselaer Co. - Greenbush, s.d. C. H. Peck s.n. (holotype, NYS, segregated from mixed collection and including specimens glued to cards marked “RET-A” through “RET-D” by RET), Sand Lk., July C. H. Peck s.n. (NYS, mixed collection separated and annotated by RET). Suffolk Co. (Long Isl.) - Port Jefferson, July & August C. H. Peck s.n. (NYS), 26.viii-2.ix.1904 G. F. Atkinson 20252 (CUP-A); Westhampton, July & August C. H. Peck 2 (NYS). Warren Co. - Bolton Landing, 23.viii C. H. Peck s.n. (NYS). Washington Co. - Vaughns, R. C. Burnham’s woods N of Hudson Falls, 22.viii.1912 Stewart H. Burnham s.n. (CUP 23474), 9.ix.1915 S. H. Burnham s.n. (CUP 23472). NORTH CAROLINA—Henderson Co. - Tuxedo, Camp Mondamin, 21.ix.1980 O. K. & H. H. Miller [OKM 19177] (VPI as “A. agglutinata”); Tuxedo, 13.ix.1974 O. K. Miller 9730 (VPI as “A. peckiana”). Swain Co. - GSMNP, Kephart Prong Tr., 9.vii.1970 R. L. Shaffer 6158 (MICH). OHIO—Delaware Co. - Camp Lazarus, 17.viii.1968 W. B. & V. G. Cooke 39604 (MU f4552 as “Amanita peckiana”; RET 125-4). Ross Co. - Scioto Trails St. For., 20.vii.1969 W. B. & V. G. Cooke 41021 (MU f6344 as “A. peckiana”; RET 125-3). PENNSYLVANIA—Carbon Co. - ca. Bowmanstown, 27.viii.1967 R. L. Homola 2431 (L; MAINE). RHODE ISLAND—Washington Co. - Carolina Management Area, 5.viii.1988 Dobay 8-5-88-A (RET 239-8). TENNESSEE—Blount Co. - GSMNP, Cades Cove, 9.ix.1969 L. R. Hesler s.n. (L). TEXAS—Grimes Co. - Sam Houston Nat. For., ca. Richards, 17.v.1953 H. D. Thiers 1874 (MICH, as “A. agglutinata”). VIRGINIA—Montgomery Co. - Craig Crk., 19.viii.1978 P. C. Hammond 14 (VPI, as “A. peckiana”); John’s Crk., 30.viii.1978 P. C. Hammond 36 (VPI).

discussion

Amanita volvata is the type species of Amanita section Amidella. ??more??.

The following figures provide sporograph comparisons between A. volvata and other North American taxa of sect. Amidella.

The spore data from the type study of Jenkins (1978a) is not comparable to the data obtained in the type study by RET. It is presented here for completeness: [-/-/1] 10.2 - 11.7 × 4.7 - 6.2 μm, (Q = 1.85 - 2.32; Q' = 2.02), hyaline, thin-walled, amyloid, elongate to cylindric, often adaxially flattened; apiculus sublateral, cylindric to truncate-conic; contents guttulate; color in deposit not recorded.

citations

—R. E. Tulloss

editors

RET

Information to support the viewer in reading the content of "technical" tabs can be found here.

Spore data for collections
provisionally identified as: Amanita volvata (Peck) Lloyd

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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