BRIEF DESCRIPTION: This description is based on the original one of Corner and Bas (1962).

The cap of Amanita privigna is 50 - 60 mm wide, becoming subumbonately plano-convex, livid, umber, fuliginous umber at the center, paler and finely innately streaked toward margin, slightly viscid, smooth, glabrous, with a smooth margin. The cap flesh is white, fairly firm, 4 - 5 mm thick in center, and thinning toward the margin.

The gills are free, rather crowded, narrow, white, and becoming pale cream.

The stem is 50 - 60 x 10 -12 mm, white with small, pale gray, floccose-scurfy patches or fibrils, and pure white at the apex. The volva is 8 - 12 mm high, white at the base, and rather firm.

The spores measure 7.4 - 9.0 x 6.7 - 8.5 µm and are globulose to subglobulose (sometimes broadly ellipsoid). Clamps were not observed at bases of basidia.