This description of Amanita brunneibulbosa is taken from http://pluto.njcc.com/~ret/amanita/species/brunbulb.html
BRIEF DESCRIPTION: The following is based on the original description of Miller (1992).
The cap of Amanita brunneibulbosa is 38 - 44 (-50) mm wide, conic to convex then planar in age, viscid, glabrous, brown, with a nonstriate margin, sometimes appendiculate in young material. Volval remnants are present as light gray, powdery remains of the volva, which are present at the margin in young material or as loose, white, easily removed patches over the center and (at times) irregularly over the surface. The flesh is white, firm, and unchanging.
The gills are subdistant, narrowly adnate, broad, white, sometimes becoming buff in age. The short gills are present in a single tier.
The stem is 75 - 110 × 4 - 7 mm, cylindric white covered with minute fibrils, tinted cream to buff. The basal bulb is subglobose, marginate to submarginate, 13 - 23 × 13 - 20 mm. The volva is white and submembranous and is visible as rings of tissue on the base, tinted cream to buff. The ring is dull white to grayish white, very fragile, sometimes present as a ragged skirt, sometimes absent. The flesh is white, firm, and unchanging.
The spores measure 8 - 10 × 5 - 6.5 µm and are ellipsoid to elongate and amyloid. Clamps are absent at bases of basidia.
Originally described from the state of Western Australia where it occurs gregariously in litter under Eucalyptus.
Common in Lane Cove National Park, Sydney and other locations in NSW.
- Amanita, possibly Amanita brunneibulbosa, in soil and leaf litter, eucalypt forest, Upper Allyn, Barrington National Par