| name | Amanita elongatior | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| author | Lamoureux. 2006. Champignons du Québec 2: 47, fig. 2. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| name status | nomen provisorum | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| english name | "Lamoureux's Long-stemmed Ringless Amanita" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| etymology | elongatior, "longer" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| GenBank nos. |
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| type studies | double click in markup mode to edit. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| revisions | This page. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 is based on the 2006 publication of Yves Lamoureux, notes and photographs of the diverse collectors and RET, on molecular research by Dr. Linas V. Kudzma, and other original research by Dr. Jacques Landry and RET. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| pileus |
Lamoureux (2006):
80 - 120 mm wide, olivaceous yellow to brownish
yellow, sometimes darker (to umbrinous) over the
umbo and in broad zone around umbo (but not
overlapping marginal striations), at first ovoid,
then rounded-conic, finally planar with distinct
umbo; context white; margin
nonappendiculate, striate (0.2 - 0.25R);
universal veil absent.
RET:47 mm wide, brown over disc, otherwise tan to pinkish tan, distinctly to indistinctly virgate, unchanging when bruised or cut, irregular, tacky, subshiny, not becoming viscid when moistened; contextnearly white, 4.5 mm thick above stipe, thinning evenly for 80% of gill length, then membranous to margin; margin nonappendiculate, striate (0.15 - 0.30R); universal veil absent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| lamellae |
Lamoureux (2006): white
to salmon-tinted. RET: free to receding, without decurrent tooth on stipe, crowded, off-white to pale cream in mass, off-white in side view, unchanging when cut or bruised, 4 mm broad, broadest at 65-70% of lamella length from stipe; lamellulae subtruncate, of diverse lengths, plentiful. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| stipe |
Lamoureux (2006): 200 - 300 × 10 - 20 mm, with pallid base color, narrowing upward, decorated with fibrils (concolorous with pileus) organized in zebroid pattern; context white; exannulate; universal veil as saccate volva, white on exterior, membranous, persistent, 49± × 21± mm, with zigzag upper edge of free limb, with limbus internus not described.
RET: ?? × 8 mm, white, narrowing upward, flaring at apex, with some fine raised surface fibrils darkening (to gray or nearly black) in upper half, finely striatulate; context nearly white, unchanging when cut or bruised, partially stuffed with white cottony material unevenly distributed, with larval tunnels not observed, with central cylinder 2.5 mm wide; exannulate; universal veil membranous, cupulate, white. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| odor/taste |
Lamoureux (2006):
Odor indistinct. Taste not
recorded. RET: Odor indistinct. Taste not recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| macrochemical tests |
none recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| basidia | RET: 53- - 59+ × 12.4 - 19.3 μm, with broadest basidia 2-sterigmate and in mature regions of hymenium 4-sterigmate and in immature regions of hymenium commonly 2-sterigmate; ??; clamps not observed. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| universal veil | On pileus: absent. On stipe base: not collected. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| partial veil | absent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| lamella edge tissue | sterile. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| basidiospores |
Lamoureux (2006): 9 - 12
× 10 - 11 μm, inamyloid, subglobose. RET: [36/1/1] (9.2-) 9.6 - 11.0 (-11.3) × (8.2-) 8.5 - 10.0 (-10.4) μm, (L = 10.2 μm; W = 9.1; Q = (1.05-) 1.07 - 1.22 (-1.27); Q = 1.13), hyaline, colorless, smooth, thin-walled, inamyloid, subglobose to broadly ellipsoid, adaxially flattened; apiculus sublateral, cyindric; contents multiguttulate with or without small granules; color in deposit not recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ecology |
Lamoureux (2006):
Solitary. In forests of Fagus or
Quercus. July to September, rare. Solitary. Canada—Québec: Under Quercus. USA—At ca. 72 m elev. Connecticut: In black loam of mixed deciduous-coniferous forest. Illinois: In Quercus/Carya forest. New Jersey: in wet loam of mixed deciduous forest with Acer, Betula, Carpinus caroliniana, Carya ovata, Fagus grandifolia, Liquidambar styracifluae, and Quercus. Pennsylvania: in mixed hardwood forest. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| material examined | RET: CANADA: QUÉBEC—Boucherville, 12.vii.2008 Renée Lebeuf 93 (RET 447-6, nrITS & nrLSU seq'd.). La-Vallée-de-Richelieu - Mont-Saint-Hilaire, 9.vii.1993 G. K. & Y. Lamoureux 1956 (CFFM; RET 521-9, nrITS seq'd.). U.S.A.: CONNECTICUT—Middlesex Co. - East Haddam, Devil's Hopyard St. Pk. [41.4756° N/ 72.3403° W, 72 m], 1.viii.2015 Mike Rapp s.n. [Tulloss 8-1-15-D] (RET 703-8, nrITS & nrLSU seq'd.). ILLINOIS—Monroe Co. - Waterloo, 11.vi.2014 Patrick Harvey 1 (RET 621-10, nrITS seq'd.). MISSOURI—Sainte Genevieve County, Hawn State Park, Picnic Area [37.83 N/90.23 W, 184 m] 19.vii.2015 P. Harvey s.n. (RET 700-6). NEW JERSEY—Warren Co. - Stephens St. Pk., ca. lower picnic area, 4.viii.1996 R. E. Tulloss 8-4-96-D (RET 229-3, nrITS seq'd.) PENNSYLVANIA—Luzerne Co. - Moon Lake Pk. [41.2530° N/ 76.0470° W, 240-400 m], 14.vii.2013 David Waskilewski s.n. [mushroomobserver #140066] (RET 550-8, nrITS-LSU seq'ed.). Ricketts Glen St. Pk. [41.3036° N/ 76.2740° W, 400-600 m], 7.viii.2012 David Wasilewski s.n. [mushroomobserver #104502] (RET 524-10, nrITS & nrLSU seq'd.), 12.vii.2014 D. Wasilewski s.n. [mushroomobserver #169770] (RET 642-9, nrITS & nrLSU seq'd.). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| discussion |
Lamoureux (2006) remarks
that he had only encountered material of this taxon
at two locations in Québec in addition to the one
cited above: Longueuil (Montérégie) and Eastman
(Estrie). He also notes that because the stipe
is deeply inserted in the substrate considerable care
is require to collect a basidiome unbroken. Deep insertion of the stipe in the substrate occurs in a number of species of section Vaginatae; however, this shared character does not imply a close relationship between the taxa in question. For example, the present species seems rather distant from A. penetratrix. Geoffrey Kibby is cited as having seen this species in New Jersey. There are four available nrLSU sequences (RET accession numbers provided under "material examined," above) attributable to the proposed Amanita sp-N65 (now included in the present species). All three have the following form: Final characters (up to 10) of the 3' end of ITS2 are placed at the 5' end of the sequence. In this region there is no difference between the sequences. In their alignment the 5' region of the LSU sequence begins at character eleven (11). The 3' terminal character position of each of the three sequences are as follows: RET 703-8: 1484 The evidence for a SNP (single nucleotide polymorphism) is provided when there is variation at a single position between the two or more sequences in an alignment. The character positions at which variation occurs among the four sequences are listed below showing the variation occurring in each case. The letter codes indicating ambiguities in the original sequence data are IUPAC codes for ambiguities In their order of appearance: "Y" = "C" or "T"; "K" = "G" or "T"; "R" = "A" or "G"; and "S" = "G" or "C." Character position: 516 This species was formerly known on this site as "Amanita sp-N65" and, later briefly, as A. advenienticometa. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| citations | Translation of (Lamoureux 2006) from French by RET, who is responsible for any errors.— R. E. Tulloss, L. V. Kudzma, and Y. Lamoureux | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| editors | RET | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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