Amanita sp-V01 - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita sp-V01
name status cryptonomen temporarium
author Tulloss
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  • 1. Amanita sp-V01, Weems, Lancaster Co., Virginia, U.S.A.  (RET 210-8)

    • cap The cap of this taxon is 64 - 94 mm wide, very pale grayish brown to brownish gray to tan over the margin with a brownish gray disc, at first hemispheric, then plano-convex, umbonate, tacky, and shiny.  The cap's flesh is mainly whitish, although grayish under the cap's skin, unchanging when cut or bruised, and 4.5 - 7.5 mm thick above the stem.  The cap's margin is striate (for about 25% of the cap's radius), and not appendiculate.  Volval remnants are absent from the cap in the material that has been reviewed.
    gills The gills are narrowly adnate with a decurrent tooth on the very top of the stem and a short decurrent line on the upper stem (use 10× lens).  In addition the gills are crowded, cream to sordid cream in mass, off-white in side view, and 6 - 8.5 mm broad.  Infrequently forking gills are present.  Short gills are truncate.
    stem The ringless stem is ?? - 138 × 8 - 11 mm, white to pale gray, browns from handling (especially on the surface fibrils), narrows upward or is cylindric, occasionally slightly flares at the very top of the stem, is minutely fibrillose and longitudinally striatulate; and occasionally, the surface splits into recurved scales.  The stem's flesh is off-white, not changing color when cut or bruised, and partially stuffed to hollow.  The volva is saccate, membranous (but breaking somewhat easily) white, smooth, leathery, with the highest point on the voval limb 29 - 33 mm from the base of fruiting body.  The volva is only attached to the stem at the stem's base and so is easily detached from the stem during collecting.  There is no obvious internal limb in the volvas that have been examined to date.
    odor/taste The odor can be faintly fish-like. The taste has not been recorded.
    spores The spores measure (8.4-) 9.8 - 12.2 (-17.5) × (7.0-) 8.4 - 11.9 (-12.9) µm and are globose to subglobose to broadly ellipsoid (rarely elongate) and inamyloid.  Clamps are not to be found at the bases of basidia.
    discussion This mushroom is known only from the eastern U.S., where it occurs subgregariously in deep sandy soils (for example, of the Atlantic Coastal Plain).  The taxon is not well-known, but may have a range extending from Connecticut to the U.S. coast of the Gulf of Mexico and the sandy oak-pine (Quercus-Pinus) forests of east Texas.—R. E. Tulloss
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