name | Amanita ostendemihi | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
author | Tulloss, S. D. Russell, K. W. Hughes, D. P. Lewis, & P. G. Harv. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
name status | nomen provisorum | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
english name | "Show Me Blusher" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
etymology | ostende mihi, show me; in honor of Missouri (the "Show me" state), the Missouri Mycological Society (MOMS), and the collector who sent us the first specimen of this species studied by RET— Patrick Harvey. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 R. E. Tulloss. Genetic sequences and analyses are courtesy of Dr. Karen W. Hughes, Univ. of Tennessee, Knoxville, and Stephen D. Russell, Purdue University. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
pileus | 50 - 90 mm wide, white and somewhat translucent, irregularly hemispheric to subcampanulate with incurved margin at first, then hemispheric to plano-convex, occasionally depressed, occasionally slightly umbonate, unchanging when cut or bruised, tacky, shiny, with suggestion of embedded concolorous radial fibrils; context white, with watery line adjacent to lamellae, unchanging when cut or bruised, 5 - 6.5 mm thick over stipe, thinning evenly to margin, sometimes becoming deeply rimose; margin nonstriate, sometimes becoming faintly striate (up to 0.1R), longer in age, nonappendiculate; universal veil absent or as irregular warts or submembranous patch of loosely connected warts, white to off-white, graying with age, verrucose to subfelted, friable, detersile. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
lamellae | free to narrowly adnate with decurrent tooth and (often) decurrent line on stipe apex, ??, white in mass (sometimes faintly pink at first), white in side view, unchanging when cut or bruised, rather thick, 3 - 7 mm broad, with margin minutely fimbriate (white), occasionally to rather commonly anastomosing, sometimes exhibiting inverse forking lamellulae truncate to rounded truncate subtruncate to subattenuate to attenuate, sometimes adjacent to stipe rather than pileus margin, unevenly distributed, of diverse lengths, plentiful. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
stipe | 57 - 135 × 5 - 12 mm, white, unchanging when cut or bruised, narrowing upward or downward, slowly flaring over distance of 6 - 10± mm at apex, with plentiful appressed white fibrils (lens) or minutely fibrillose (lens) or matted-floccose; bulb 22 - 42 × 14.5 - 21 mm, subnapiform to subradicating, with attached white mycelium; context solid to firmly stuffed, white, unchanging when cut or bruised or rarely pale pinkish brown in lower stipe, pale yellow to pale yellow-tan to slightly grayish to wine-brown in larva tunnels; partial veil apical to subapical, ample, skirtlike, striate above, floccose-flocculose to fibrillose below, with line of beige (eventually graying) universal veil material on edge or on underside near edge, eventually collapsing on stipe; universal veil not evident or as detersile patch(es) easily left in soil or in broken collars or irregular rows [sometimes faint and sometimes suggesting the “collars” seen in A. muscaria (L. : Fr.) Lam.], off-white to very pale grayish, darkening in age. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
odor/taste | Odor mild or pleasant when cut, close to floral, sometimes strongly floral. Taste not recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
macrochemical tests |
none recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
subhymenium | pseudoparenchymatous (cellular). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
basidia | ?? × ?? μm, 4-sterigmate, with sterigmata up to 4.8 × 2.0 μm; clamps not observed. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
lamella edge tissue | sterile. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
basidiospores | RET: [214/10/8] (5.9-) 6.8 - 9.0 (-10.4) × (4.1-) 4.9 - 6.2 (-7.2) μm, (L = 7.3 - 8.2 μm; L' = 7.9 μm; W = 5.2 - 5.5 (-6.0) μm; W' = 5.4 μm; Q = (1.12-) 1.25 - 1.64 (-1.82); Q = 1.35 - 1.51; Q' = 1.46), hyaline, colorless, smooth, thin-walled, amyloid, predominantly ellipsoid, infrequently broadly ellipsoid or elongate, usually at least somewhat adaxially flattened; apiculus sublateral, cylindric; contents dominantly monoguttulate (oil drop type) with or without additional granules, infrequently granular; color in deposit not recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ecology | Solitary or in small groups. Georgia: Under Quercus acutissima. Oklahoma: Scattered. In mixed forest with Quercus stellata and Q. marilandica. South Carolina: In red clay of road bank under Pinus echinata, Q. marilandica, Q. nuttallii, Cornus florida, Q. stellata, and Juniperus virginiana or at roadside under Carya sp., Liriodendron tulipifera, C. florida, Q. marilandica (as scrub), and (at a distance) Q. alba. Texas: In mixed forest or in loamy clay or in mixed Pinus and hardwood forest or with Quercus nigra. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
material examined | U.S.A.: ALABAMA—Unkn. Co. - ca. border of Shelby & Jefferson Cos., unkn. loc., 22.viii.1984 C. Bas, D. T. Jenkins, R. E. Tulloss 8-22-84-D (RET 236-7). GEORGIA—Harris Co., unkn. loc., 1.vi.2018 W. Jake Langer Parkes s.n. [mushroomobserver #318269] (RET 820-6, nrITS & nrLSU seq'd.). LOUISIANA—East Baton Rouge Parish - Baton Rouge [30.4414° N/ 91.1086° W, 14 m], 26.vi.2018 Logan Wiedenfeld s.n. [mushroomobserver #320956 (RET 823-9, nrITS & nrLSU seq'd.). Vernon Parish - Vernon Distr., Kisatchie Nat. For. [30.978º N / 93.166º W, 77 m], 25.v.2013 David P. Lewis 10703 (RET 605-5, nrITS & nrLSU seq'd.), 10710 (RET 606-2, nrITS & nrLSU seq'd.). MISSOURI—St. Charles Co. - Weldon Springs [38.6800° N/ 90.7165° W, 150 m], 8.vii.2013 Patrick Harvey s.n. [mushroomobserver #139080] (RET 552-6, nrITS & nrLSU seq'd.). NEW YORK—Oneida Co. - unkn. loc., 3.x.2013 Eric Smith s.n. [mushroomobserver 147255] (RET 598-1, nrITS & nrLSU seq'd.). OKLAHOMA—Logan Co. - unkn. loc., jct. Bryant Ave. & Waterloo Rd., 2.vii.2004 Clark Overbo 4440 (CSU, nrITS & nrLSU seq'd.). PENNSYLVANIA—Lackawanna Co. - Lackawanna St. For., Thomhurst [41.2006° N/ 75.6025° W, 523m], 4.vii.2013 David Wasilewski s.n. [mushroomobserver 138823] (RET 550-7, nrITS & nrLSU seq'd.). SOUTH CAROLINA—Oconee Co. - Seneca [34.7692° N/ 82.9653° W, 263 m], 27.vi.1985 Mary King & R. E. Tulloss 6-27-85-E (RET 054-1, nrITS & nrLSU seq'd.), 28.vi.1985 Mary King & D. C. & R. E. Tulloss 6-28-85-A (RET 056-2), Mary King [Tulloss 6-28-85-D] (RET 054-2, nrITS & nrLSU seq'd.). TEXAS—Hardin Co. - Big Thicket National Preserve, Lance Rosier Unit, 15.vi.1986 David P. Lewis 3973 (RET 617-3, LSU seq'd.); Silsbee, Roy Larson Sandyland Sanctuary, 10.vi.2000 Rhoda Roper s.n. [Tulloss 6-10-00-N] (RET 312-2, nrITS & nrLSU seq'd.). Marion Co. - ca. Gray Community, Caddo Lake Wildlife Mgmt. Area [32.7162º N/ 94.0850º W, 99 m], 17.vi.2017 David P. Lewis 12470 (RET 808-10, nrITS & nrLSU seq'd.). Newton Co. - Tim Pevoto's residence off Co. Rd. 3062 [30.711º N /93.833º W, 35 m], 31.v.2013 D. P. Lewis 10716 (RET 605-9, nrLSU seq'd.). Tyler Co. - Lake Hyatt area, Watson Rare Plant Preserve [30.581º N/ 94.379º W, 35 m], 1.vi.2013 D. P. Lewis 10722 (RET 605-3, nrITS & nrLSU seq'd.). Unkn. Co. - unkn. loc. [east Texas], 26.x.1985 Texas Mycol. Soc. foray participant s.n. [Tulloss 10-26-85-F] (RET 082-7). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
discussion |
The present species was often mistaken for Amanita
maryaliceae prior to their segregation by
molecular means. The following figure provides a sporograph comparison to A. maryaliceae: The following figure provides a sporograph comparison to A. rubescens var. alba: The spore sample size for the present species is small and, moreover, much of the hymenial surface of the original Missouri specimen is markedly immature; hence, we might expect proportionately larger and more slender spores in a mature specimen. The yellow on the partial veil in the background image looks like a photographic artifact. there is no yellow in the other image showing the partial veil. The species is genetically distinct from Amanita rubescens var. alba. The range provided in the "material examined" data field, above, has been extended to Indiana with molecular support by Stephen Russell on inaturalist.org [here]. This species was formerly known in these pages as "Amanita sp-MO02." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
citations | —R. E. Tulloss | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
name | Amanita ostendemihi |
name status | nomen provisorum |
author | Tulloss, S. D. Russell, K. W. Hughes, D. P. Lewis, & P. Harvey |
english name | "Show Me Blusher" |
images |
1. Amanita ostendemihi (yellow on partial veil is photographic artifact), Weldon Springs, St. Charles Co., Missouri, U.S.A. RET 552-6 2. Amanita ostendemihi, Weldon Springs, St. Charles Co., Missouri, U.S.A. RET 552-6 3. Amanita ostendemihi, Weldon Springs, St. Charles Co., Missouri, U.S.A. RET 552-6 4. Amanita ostendemihi (typical local red clay on stipe), Seneca, Oconee Co., South Carolina, U.S.A. nbsp; (RET 056-2) |
photo |
Patrick Harvey - (1-3) Weldon Springs, St. Charles
County, Missouri, U.S.A. (RET 552-6)
[Note: Full-sized, original versions of these images
can be found on
mushroomobserver.org—here.] RET - (4) Seneca, Oconee County, South Carolina, U.S.A. (RET 056-2) |
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.