BRIEF DESCRIPTION: The cap of Amanita limbatula is 25 - 50 mm wide, convex to plano-convex, white to creamy white, entirely pulverulent-subflocculose, appendiculate, with a slightly sulcate, somewhat inflexed margin.  In young specimens and at the center of the cap in older specimens, it is covered with small, vague, concolorous to slightly paler, felted-subflocculose, adnate, flat patches of volva.

The gills are moderately crowded, narrowly adnate to just free, rather broad to broad, whitish, and broadly rounded near the margin of the cap.  The short gills are rounded-truncate to attenuate.

The stem is 25 - 50 x 5 - 8 mm, subcylindrical, pulverulent-flocculose, with a tender, appressed, whitish, submembranous-felted, with age sometimes disappearing volval limb.

The spores of the type collection measure 9 - 11 (-13) x 4.5 - 6 (-6.5) µm, according to Dr. Bas, and are amyloid and elongate to cylindric.  Clamps are present at bases of basidia.  Spores from recently collected and well-dried material measured (10.5-) 10.6 - 13.0 (-14.1) x (5.5-) 5.9 - 7.0 (-8.0) µm.

Amanita limbatula is a species known from only a few collections made in the sandy Atlantic Coastal Plain of the eastern U.S.A.  The dominant forest type in which it occurs is pine-oak.  Its type was collected on Long Island in New York State; it has been recently found in quantity in Tallahassee, Florida.  At least two collections that may belong to this species have been found considerably inland in the middle Appalachian Mountains.

Bas created his stirps Limbatula to include the present species, A. parva (Murrill) Murrill, and A. praelongispora (Murrill) Murrill.

Amanita limbatula is the type species of Amanita subsection Limbatulae Bas.  This subsection comprises three stirpes of lepidellas with limbate volvas: stirps Limbatula, stirps Preisii (see A. preissii (Fr.) Sacc.), and stirps Roanokensis (see A. roanokensis Coker). -- R. E. Tulloss