The following description is
based on the original description by A. V. Sathe & S. D. Deshp.
The cap of Amanita albofloccosa is up to 35 - 40 mm wide in dried material,
pale yellow, yellow-brown with age, hemispheric to plano-convex, fleshy,
with an appendiculate and entire, incurved margin. The surface of the
cap breaks into scales as it expands; the scales are cinnamon colored
and rub off with age.
The gills are free, crowded, pale cream,
umber on drying, fleshy, 4 mm broad in dried material, narrowing to
nearly a point at both ends, with an entire or slightly jagged margin.
Short gills are present.
The stem is 120 - 168 × 4 - 5 mm, cylindric,
concolorous with the cap, with a bulbous base. The ring in young
material is placed high on the stem,
membranous, white, becoming orange, and disintegrating into a floccose
zones on the stem in age. The volva is present as floccose scales.
The odor is strongly nauseating like that of calcium oxychloride.
The spores measure 7.3 - 9.6 × 6.4 - 7.7 µm and
are globose to subglobose and amyloid. Clamps are absent at bases
This species is known only from a single specimen found on the Poona University campus, Maharashtra state, India. It occurred with Chlorophyllum molybdites and the authors list nearby one woody plant, Dalbergia melanoxylon (Leguminosae), an African import to India. No indication of ectomycorrhizal relations of Dalbergia were found during an internet search.
Because of the absence of clamps the authors compare this species to Amanita aureofloccosa Bas which would place it in stirps Thiersii. The authors' description of the present species' looking "like [a] drumstick until the cap expands" could be said of a number of other species in stirps Thiersii.
The fact that the present species is white but taking on yellow, orange, and cinnamon tints suggests that the specimen on which the species is based may have been suffering from the "yellowing syndrome" (see Amanita subsolitaria (Murrill) Murrill).—R. E. Tulloss and L. Possiel
A. V. Sathe & S. D. Deshp. 1980. Agaricales (Mushr.) S. W. India 1: 14-16, 33, fig. 5.
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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
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taxon (including non-type material and/or material not cited in the protolog).
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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 derived entirely from the species' protolog.
from protolog: Until the expansion of the pileus, the basidiome is shaped like a "drumstick."
from protolog: [Note: Described, at least in part (including measurements) from exsiccatum.] 35 - 4 mm wide, pale luteous, hemispheric to plano-convex, moist, but nonhygrophanous?; context fleshy, non-confluent with stipe: margin entire, incurved, appendiculate; universal veil as white covering, breaking into scales with pileus expansion, turning yellow-brown or cinnamon with age, removable with friction in age. [Note: Most taxa of subsect. Vittadiniae are very difficult to keep dry in herbaria. They are very hygroscopic; this is probably the reason for the description of an exsiccatum as moist, above.—ed.]
from protolog: free, crowded, pale cream when fresh, umber in exsiccata, 40 mm broad in exsiccatum, ventricose, with margin entire to subcrenate; lamellulae present.
from protolog: [Note: Described, at least in part (including measurements) from exsiccatum.] 120 - 168 mm x 4 - 5 mm, concolorous with pileus, cylindric; bulb present, ?; context ?; partial veil evident in young specimens, superior, membranous, white becoming orange, disintegrating into floccose zone in age; universal veil as floccose scales. [Note: Apparently a typographical error, "27.7 µm at apex, 66.6 µm at base" is attached to the end of the stipe description.—ed.]
from protolog: Odor strong, nauseating, that of Ca-oxychloride. Taste not reported.
probably absent or ill-defined—ed.
from protolog: filamentous hyphae 8.6 - 11.5 µm broad; acrophysalides not described; clamps lacking.
from protolog: 16.4 - 23.2 × 5.7 - 6.5 μm, 4-sterigmate, clavate, hyaline, with sterigmata 2.7 μm long; clamps lacking.
from protolog: On pileus: filamentous hyphae not described; inflated cells in chains, thin-walled, hyaline, cylindric to fusiform, in upper part of volval layer or wart 69 - 92 × 17.2 - 37 μm, in lower part 114 - 143 × 17.2 - 29 µm; clamps lacking. [Note: The lower portion of the universal veil on the pileus was incorrectly described as a pileipellis in the protolog.—ed.]
from protolog: [-/-/-] 7.3 - 9.6 × 6.4 - 7.7 μm, (est. Q = 1.14 - 1.25; est. Q = 1.20), hyaline, [colorless,] smooth, with slightly thickened wall, acyanophilic, amyloid, globose to subglobose; apiculus "lateral"; contents not described; color in deposit not described. [Note: Given the dimensions of the spores, the value for Q must be a typographical error. The value of Q is estimated to be 1.2. Likewise, we have not provided what we take to be intended as the mean length and mean width in the protolog as there is either a typographical or computational error.—ed.]
from protolog: Solitary. In forest with Dalbergia melanoxylon Guill. & Perry.
from protolog: "On the basis of its strong nauseating smell this mushroom was first identified as Amanita nauseosa.... The detailed characterization revealed that the present material differed from it significantly in being clampless, and thus closer to A. aureofloccosa Bas.... The present species however, differs from A. aureofloccosa in having white felt-like universal veil in bud as against the golden orange veil in the latter. Due to this difference the present material could not be accommodated under A. aureofloccosa or any other existing species of Amanita, the view is supported by Bas (pers. comm.). ....."
The habit illustration in the protolog shows the stipe to be completely devoid of universal veil in contradiction to the text.
The cells depicted as "epicuticular elements" and as cells from "scales" appear to be cells that would be expected in the universal veil of an amanita of subsect. Vittadiniae. Nevertheless, it should be noted that the context of the stipe is not reported to contain acrophysalides; hence, the entity has not been demonstrated to be an Amanita.
If the present species is an Amanita, as seems probable, then it can be assigned to Bas' stirps Thiersii.
—R. E. Tulloss
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