Amanita sp-V02 - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita sp-V02
name status cryptonomen temporarium
author Tulloss
images
  • Amanita sp-V02, Hickory Hollow Mem. Pk., Lancaster Co., Virginia, U.S.A.Amanita sp-V02, Hickory Hollow Mem. Pk., Lancaster Co., Virginia, U.S.A.

    1. Amanita sp-V02, Hickory Hollow Mem. Pk., Lancaster Co., Virginia, U.S.A.

    • cap The cap is 86 - 102 mm wide, brownish gray (5D3) over the center, paler toward the margin, faintly virgate, umbonate, subshiny, and tacky.  The cap's flesh is white, brownish in the center (both under the cap's skin and just above the stem).  The central cavity of the stem extends into the cap's flesh for about one half of the cap's thickness.  The cap's margin is striate (extending 10 - 15% of the cap's radius).  Volval remnants were absent on the few specimens that have been examined.
    gills The gills are narrowly adnate with a decurrent tooth and a decurrent line on the very top of the stem.  They are off-white in mass, off-white or watersoaked in side view, infrequently forking, and with margins that may become brown with aging.  Short gills are truncate to subtruncate.
    stem The stem is 63 - 100 × 11.5 mm, off-white, graying with handling, narrowing upward or cylindric, flaring at flaring at the very top, decorate with fine fibrils, and very finely and faintly striate.  The stem's flesh is off-white, unchanging when cut or bruised, and may have larva tunnels that are the same color as the surrounding tissue or very pale tan.  The stem is hollow and lined with white cottony material.  The stem's ring is sometimes absent or (when present) is ragged, appressed, scant, and rather highly placed on the stem.  The volva is sack-like, smooth, leathery, whitish, rather tough, membranous, dividing into flaring lobes, and less than 1 mm thick.  A small, membranous internal limb (about 1 mm high) is present and placed just above the point of attachment of the volva to stem.
    spores The spores measure (8.4-) 8.7 - 11.9 (-14.0) × 5.6 - 7.3 (-8.4) µm and are ellipsoid to elongate and inamyloid.  Microscopic examination of the gills has not been carried out, but if this species is properly placed in Amanita section Caesareae, then clamps should be rather common at the bases of basidia.
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