name | Amanita williamsiae | ||||||||||||||||||||||||||||||||||||||||||||||||||||
author | Tulloss nom. prov. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
name status | nomen provisorum | ||||||||||||||||||||||||||||||||||||||||||||||||||||
english name | "Williams' Great Ringless Amanita" | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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 by R. E. Tulloss. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
pileus | 85 mm wide, pale yellow (1A2-3), disk becoming brownish with age, campanulate at first, becoming plano-convex, umbonate; context white, yellow under pileipellis, 8 mm thick at stipe, thinning evenly for about half of radius, then a membrane; margin striate (0.4R), nonappendiculate, decurved; universal veil absent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
lamellae | very pale yellow (1A2), up to 8 mm broad; lamellulae truncate. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
gleba | double click in markup mode to edit. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
stipe | 162 × 11.5 mm, white, at first undecorated or with faint longitudinal striations and fibrils, then with fibrils darkening (grayish) with age, narrowing upward, base rounded; context white, hollow to stuffed, with central cylinder 5 mm wide; exannulate; universal veil as saccate volva, white, leathery, voluminous, with limb reaching to 51 mm from stipe base. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
odor/taste | Odor and taste not recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
macrochemical tests |
Spot test for tyrosinase (paracresol) - positive in universal veil, pileipellis, pileus context, and lamellae (other tissues not tested). Test voucher: Tulloss 8-18-84-B. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
lamella trama | bilateral, divergent; filamentous undifferentiated hyphae ?? μm wide, sometimes with yellow refractive walls; ??. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
basidia | ca. 53 × 14.8 μm, 4-sterigmate, with sterigmata up to 5.2 × 3.0 μm (to 10.5 μm long in immature material), ??; clamps probably absent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
basidiospores | composite data from all material revised by RET & CRC: [130/6/5] (9.5-) 10.5 - 14.0 (-15.7) × (8.2-) 9.0 - 11.5 (-14.0) µm, (L = 11.0 - 13.4 µm; L' = 11.5 μm; W = 9.8 - 11.4 µm; W' = 10.1 μm; Q = (1.03-) 1.05 - 1.25 (-1.34); Q = 1.11 - 1.18; Q' = 1.13), hyaline, colorless, smooth, thin-walled, inamyloid, subglobose to broadly ellipsoid, sometimes expanded at one end, adaxially flattened, with "giant" spores sometimes present; apiculus sublateral, cylindric to truncate-conic; contents granular to mono- or multiguttulate; pure white in deposit. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
ecology | Solitary pr scattered or in small groups. New Jersey: At 14 m elev. In sandy soil with high organic content of Pine Barrens pine-oak (Pinus rigida-Quercus) forest of Atlantic Coastal Plain. New York: At 1± m elev. In sand of Coastal Plain with Pinus and Quercus velutina. South Carolina: At 81 m elev. In sandy soil of area of "scrub oak and 3-needle pine." | ||||||||||||||||||||||||||||||||||||||||||||||||||||
material examined | U.S.A.: DELAWARE—Sussex Co. - ca. Milford, Prime Hook Nat. Wildlife Ref., Turkle Pond Access Rd. [38.8217° N/ 75.2632° W, 1 m]. 10.ix.2018 Ethan Crenson s.n. (RET 842-2). FLORIDA—Marion Co. - Ocala Nat. For. [29.241° N/ 81.6888° W, 11 m], 5.vii.2013 Justin Brosey s.n. [mushroomobserver #138667] (RET 548-9, nrLSU seq'd.). GEORGIA—Evans Co. - 6.5 km N of Claxton [32.1876º N/ 81.8461º W, 38 m], 13.viii.2017 Joe Smith s.n. (RET 805-2, nrLSU seq'd.). NEW JERSEY—Atlantic Co. - Peaslee Fish & Wildlife Mgmt. Area, by Tuckahoe R. [39°20'10" N/ 74°51'30" W, 14 m], 18.viii.1984 Gallagher s.n. [Tulloss 8-18-84-B] (RET 052-3, sporeprint only). Burlington Co. - Chatsworth, Franklin Parker Preserve [39.8136° N/ 74.552° W, 30 m], 18-22.vii.2012 John & Nina Burghardt s.n. (RET 555-3, nrLSU seq'd.); Chatsworth, Franklin Parker Preserve, W of north gate [39.8138° N/ 74.5476° W, 29 m], 22.vii.2012 John & Nina Burghardt & Igor Safonov s.n. [mushroomobserver #102465] (RET 503-5, nrITS & nrLSU seq'd.), 31.vii.2012 I. Safonov & J. & N. Burghardt s.n. (RET 610-6), Franklin Parker Preserve, Red Trail, 17.viii.2014 I. Safonov & N. Burghardt s.n. (RET 630-1, nrLSU seq'd.). NEW YORK—Suffolk Co. (Long Isl.) - Riverhead, Indian Isl. Co. Pk. [40°55’35” N/ 72°37’33” W, 1 m], 3.viii.2010 Margaret Horman s.n. (in herb. Long Isl. Mycol. Soc.; RET 464-3), 29.vii.2011 Joel Horman s.n. (RET 478-5), 1.viii.2011 J. Horman s.n. (RET 478-10), 22.viii.2011 J. Horman s.n. (RET 487-7, spore print only). SOUTH CAROLINA—Chesterfield Co. - ca. Patrick, Sand Hills St. For. [34°33'04" N/ 80°04'15" W, 81 m], 11.x.1995 Wm. Roody s.n. (RET 160-3). | ||||||||||||||||||||||||||||||||||||||||||||||||||||
discussion |
This species is known from only four sites and is
apparently a species of the Atlantic Coastal Plain of the
U.S.A. We had difficulty finding the 5' end of nrLSU, but we were able to see the motif and some of its context in the fragments of nrITS we found in data from RET 160-3. The 5' motif in this species is the 5'-TCTGACCTCAAATCA variant. Taxa found to have this variant are listed at the end of the discussion on the technical tab of the taxon page for A. penetratrix. The present yellow-capped species is one of only two yellow-capped species known to date in the larger grouping of taxa with the stated variant of the nrLSU 5' motif. Otherwise, such species have caps limited to the white-gray-brown color range. The other yellow-capped taxon with the unusual nrLSU 5' motif is A. sp-AUS08, which has been found in semi-rainforest in New South Wales, Australia. The present taxon was previously known as "Amanita sp. 24" in correspondence, keys, and checklists of RET. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
citations | —R. E. Tulloss, C. Rodríguez Caycedo, J. and M. Horman | ||||||||||||||||||||||||||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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name | Amanita williamsiae |
name status | nomen provisorum |
author | Tulloss, Kudzma & J. L. Horman |
english name | "Williams' Great Ringless Amanita" |
images | |
photo |
RET - (1) Peaslee Fish & Wildlife Management Area,
Atlantic County, New Jersey, U.S.A. (RET 052-3) Joel Horman - (2) Riverhead, Indian Island County Park, Suffolk County (Long Island), New York, U.S.A. (RET 464-3) I. G. Safonov - (3) Franklin Parker Preserve, Woodland Twp., New Jersey, U.S.A.(RET 503-5) [Note: Untrimmed and unedited images may be found at mushroomobserver.org/102465] Justin (Tmethyl)- (4-5) Ocala National Forest, Marion Co., Florida, U.S.A.(RET 548-9) [Note: Untrimmed and unedited images may be found at mushroomobserver.org/138667] |
name | Amanita williamsiae |
bottom links | [ Keys & Checklists ] |
name | Amanita williamsiae |
bottom links | [ Keys & Checklists ] |
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.