BRIEF DESCRIPTION: The cap of A. foetens is 70 - 260 mm wide, convex, white, sometimes pinkish or yellowish tinge, dry, appendiculate, with a nonsulcate margin.  At first, the cap is covered with rather small, adnate, pulverulent-floccose to subfelted, subpyramidal warts to patches on a felted-flocculose background; later the cap is completely pulverulent-flocculose to squamulose-subfelted, probably glabrescent with age.

The gills are crowded, free, white, and becoming dull cream to yellow.  The short gills are attenuate.

The stem is 80 - 210 x 11 - 33 mm, subcylindrical, solid, firm, white, and floccose all over or with vague girdles of subfibrillose patches or nearly glabrous.

The spores measure 8 - 9.5 x 7.5 - 9 µm and are amyloid and globose to subglobose.  Clamps are not found at bases of basidia.