The cap of this species is about 53 mm wide, pale grayish brown with notably darker gran-brown to brown in the center and slightly darker gray brown over the striate area, and umbonate. The cap's flesh is off-white except under cap's skin in the umbo where it is gray and elsewhere under the cap's skin paler gray; the fleish is 4 mm thick above the stem. The cap's margin is striate (45% of pileus radius); and volval remnants are absent from the cap.
The gills are free, crowded, off-white in mass, white to pale grayish white in side view, and about 3.5 mm broad. The short gills are truncate, unevenly distributed, of diverse lengths, and plentiful.
The stem is about 151 × 7 mm, off-white, smooth in the upper three-quarters, and below area has pale grayish fibrils forming upward pointing squamules. There is no annulus on the stem. At the stem's base, the volva is sack-like, membranous, white on both inside and outside surfaces, 42 × 12 mm. The volva has a thin inner limb with very uneven free edge; it is unusually long and attached to the outer volval limb at the point of that limb's attachment to to the stem.
Spore from this species measure (9.8-) 10.0 - 11.5 (-12.5) × (8.1-) 8.5 - 10.0 (-10.5) μm and are inamyloid and subglobose to broadly ellipsoid. Status of clamps on the basidia has not been investigated, but they are probably absent.
The long, thin inner limb of the volva is somewhat reminiscent of the same structure in the Atlantic coastal plain species Amanita longicuneus Tulloss nom. prov., but that spores of that latters species are (so far is is presently known) larger and closer to being spherical—R. E. Tulloss
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The following material is taken from original research of R. E. Tulloss.
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