BRIEF DESCRIPTION: This description is based on that of Bas (1969).

The cap of Amanita preisii is 50 - 80 mm wide, convex to plano-convex, finally slightly depressed at the center, white to cream with a pale ochraceous tinge at the center, viscid when moist, with a nonsulcate, appendiculate margin. The cap is scattered with very thin, hardly discernible patches or flakes belonging to volva.

The gills are moderately crowded, adnexed to narrowly adnate, moderately broad, and white to cream. The short gills are truncate to obliquely truncate.

The stem is 80 - 120 x 8 - 20 mm, subcylindrical, farinaceous, white, sometimes with rusty spots, with the volva usually leaving a fragile, membranous limb on the top of the bulb.

The spores measure (9.5-) 10 - 12 (-12.5) x 5.5 - 6 µm and are amyloid and elongate to cylindrical. Clamps are absent at bases of basidia.

This species was originally described from southwestern Australia. Dr. Bas (1969) reviewed material of J. Gentilli that appeared to conform well with what was known of Fries' species.

The collections examined by Bas were collected "under shrubs and Eucalyptus in West Australia." Gentilli reported the species to be common in that state.

Bas based his stirps Preissii on A. preissii and included within that stirps A. sublutea (Cleland) E.-J. Gilbert and A. mutabilis Beardslee. For a brief statement concerning the related stirpes of Amanita subsection Limbatulae, see A. limbatula Bas. -- R. E. Tulloss