Amanita sp-T23 is a rarely encountered species with a yellowish beige cap, a notably floccose stem, and predominantly broadly ellipsoid to ellipsoid spores.
The cap is about 52 mm wide, pale yellowish beige, and has a very slight umbo. The cap's flesh is white (except for pale tan just below pileipellis) and 4 mm thick above the stem.
The gills are free to narrowly adnate, close to subcrowded, pale orangish cream in mass, off-white in side view, and about 4 mm broad. The short gills are truncate.
The stem is about 111 × 8.5 mm, and off-white below a coating of flocculence; the dense flocculence is concolorous with the cap. The stem has no annulus. The volval remnants at the stem's base are submembranous white patches.
The odor is very faint or absent. No taste is reported for this species.
The spores of this species measure (9.4-) 10.1 - 11.9 (-15.7) × 7.7 - 9.1 (-11.2) µm and are broadly ellipsoid to ellipsoid (infrequently subglobose) and inamyloid. Clamps are not to be found at bases of basidia.
This species is known from mixed forest in the southeastern U.S.—R. E. Tulloss
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The following material is derived from original research of R. E. Tulloss.
52 mm wide, in general yellowish beige, at margin yellower than 10YR 8/3, over disc 10YR 7/4, at first hemispheric with minimal umbo, tacky, dull; context white except tan immediately below pileipellis, unchanging when cut or bruised, 4 mm thick above stipe; margin nonappendiculate, striate (0.2±R); universal veil absent.
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free to narrowly adnate with short decurrent line on upper stipe, close to subcrowded, pale orangish cream in mass, off-white in side view, unchanging when cut or bruised, 4 mm broad; lamellulae truncate, ??.
111 × 8.5 mm, off-white under layer of flocculence (concolorous with pileus margin), unchanging when cut or bruised, narrowing upward, flaring slightly at apex; context stuffed above, solid below, white, unchanging, with insect tunnels pale sordid or concolorous with context, with central cylinder 3 mm wide; exannulate; universal veil remaining only in few submembranous patches, soft, white.
Odor none or very faint. Taste not recorded.
lamella edge tissue
composite of all data from material revised by RET: [20/1/1] (9.4-) 10.1 - 11.9 (-15.7) × 7.7 - 9.1 (-11.2) µm, (L = 11.1 µm; W = 8.6 µm; Q = (1.14-) 1.20 - 1.45; Q = 1.29), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, infrequently subglobose, some expanded at one end, some slightly indented adaxially, predominantly adaxially flattened; apiculus sublateral, ??; contents ??; ?? in deposit.
Mississippi: Solitary. In loamy soil of "midslope hardwood" forest.
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.