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Section Amanita
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[ Keys
& Checklist/Picturebooks ] "Buff Powdered Amanita"
Technical description (t.b.d.) BRIEF DESCRIPTION: This description is taken from the protologue (Bas, 1982). The cap of A. pulverotecta is 150 mm wide, plano-convex, dry, with a sulcate-striate margin (15 - 25% of the radius). The cap is whitish but densely sprinkled with pale buff powdery remnants of the volva. The gills are just touching the apex of the stem, moderately crowded, and whitish with a yellowish buff tinge. The stem is 175 mm long, broadening downwards, and exannulate. It has a somewhat elongated, subventricose bulb at its base. The flesh is white, soft, and brittle. The volva is completely pulverulent. The spores measure (10.6-) 10.9 x 12.8 (-14.8) x 5.7 - 7.4 µm and are inamyloid and ellipsoid to elongate to elongate-ovoid (infrequently cylindric). Clamps are absent at bases of basidia. This species was originally described from Malawi. The only habitat information recorded is the species' occurrence at about 1,000 m elev. This species is unusual in section Amanita
because of its lacking a true skin on the cap. The volva
remains connected to the cap because there is no
gelatinized region in which hyphae connecting the volva
to the cap could be severed -- as would commonly occur in
the majority of amanitas. The present species is
separated from A. farinosa Schwein. (in which gelatinization is considerably
delayed) and related taxa by lack of a distinct skin on
the cap and by more elongated spores, among other
characters.
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