Cap olivaceous brown to grey-brown, convex, and eventually flattens. The margin is noticeably paler than the rest of the cap, though this feature may fade as the cap fully expands. The margin is prominently lined or grooved for up to 1 cm or more. The cap flesh is white and firm. Gills free from the stem or slightly attached to it, white and moderately crowded. It has short gills unevenly distributed. Stem pale grey, with scales in a regular zig-zag pattern and a slightly swollen stem base. It has a leathery (submembranous) grey bag-like volva and no ring. Spore print white.
Microscopic Features: Spore approximately spherical, measuring 10-14μm in diameter.
Amanita submembranacea on the First Nature Web site.
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