Amanita pseudovaginata - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita pseudovaginata
name status nomen acceptum
author Hongo
english name

"Hongo's Pale Ringless Amanita"

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  • Amanita pseudovaginata, Yunnan Prov., China.Amanita pseudovaginata, Yunnan Prov., China.

    1. Amanita pseudovaginata, Yunnan Prov., China.

    • cap

    Fruiting bodies of Amanita pseudovaginata are small to medium-sized. The cap is 30 - 60 mm wide, applanate, sometimes slightly depressed over disc, greyish, sometimes with brownish tinge, and occasionally nearly white; it is glabrous or covered with greyish to whitish, felty to patchy volval remnants. The cap margin is striate (20% - 30% of the radius) and non-appendiculate, and the context is white.

    gills

    The gills are free, white, and sometimes become greyish when dried; the short gills are truncate.

    stem

    The exannulate stem 50 - 80 × 5 - 12 (-15) mm, subcylindric or slightly attenuate upwards, fistulose, with a surface that is white to dirty white and nearly smooth; the stipe lacks a basal bulb. At the base of the stip, the volva is saccate, 15 - 20 × 10 - 15 (-25) mm, 1 - 1.5 mm thick, membranous, with an outer surface that is white to whitish, with yellowish brown spots. The upper half of the volva often becoming greyish when mature; the inner surface is usually greyish, but sometimes whitish; and there is an internal limb on the inner surface.

    spores

    The spores [from east Asia] measure (8.5-) 9.5 - 12.5 (-14.0) × (7.0-) 8.0 - 10.5 (-11.0) µm and are subglobose to broad ellipsoid and inamyloid. Clamps are absent from the bases of basidia.

    [Spores from a small amount of northern Indian material measure (9.4-) 10.4 - 12.3 (-14.0) × 8.5 - 10.9 (-11.3) µm.—RET]

    discussion

    The species was originally described from Japan. It is widely distributed in China, and was recently reported from northern India.—Zhu L. Yang.

    brief editors RET

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