Amanita fallax - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita fallax
name status nomen provisorum
author Tulloss & G. Wright
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  • Amanita fallax, La Malintzi Volcano, Tlaxcala edo., Mexico.Amanita fallax, La Malintzi Volcano, Tlaxcala edo., Mexico.

    1. Amanita fallax, La Malintzi Volcano, Tlaxcala edo., Mexico.

    • cap The cap of Amanita fallax is 30 to 110 mm wide, hemispheric at first to broadly concave to plano-convex, white, becoming pale vinaceous and then cinnamon-brown in age, tacky to moderately viscid when wet, with a nonstriate (or slightly striate in age) margin.  The volva is present as one or a few large patches, white to grayish yellow to pale brown vinaceous.  The flesh is white, firm, staining pink or rosy vinaceous or brownish-rose when cut, often rapidly fading, but then brownish in old cuts.
    gills The gills are narrowly attached, somewhat sinuate, close, white to pale orangish white, bruising pink then changing to brown, moderately broad, with white minutely fimbriate edges that become brown with age.  The short gills are truncate to subtruncate.
    stem The stem is 30 - 135 × 8 - 34 mm, white, becoming cinnamon brown in age, cylindric, decorated with fine, white to brown appressed flocculence especially in upper quarter, fibrillose below, exannulate or with evanescent submembranous subapical to superior, yellowish-white ring.  The base is rounded. The saccate volva is whitish and cylindrical.  The flesh is hollow to stuffed.
    odor/taste The odor of this mushroom is slightly fragrant to fungoid to ammonia-like.  Taste is mild at first, but then becomes bitter and/or soapy.
    spores The spores measure (7.2-) 9.4 - 14.5 (-20.8) × (4.9-) 5.6 - 8.0 (-12.2) µm and are ellipsoid to elongate to cylindrical and amyloid.  Clamps are probably not present at bases of basidia.
    discussion ??more?? —R. E. Tulloss
    brief editors RET

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