
Appearance
Cap: The dry, white, plano-convex cap of Amanita subcokeri is 71 – 137 mm wide. The flesh of the cap is white and thins evenly towards the cap's edge. The edge of the cap is decurved to incurved and sometimes is decorated with a short curtain-like extension of the cap's skin. The volva is present on the cap as pyramidal warts over much of the cap and as small scales or powder near the cap's edge.Gills: The gills are free to very narrowly attached, close to crowded. The color ranges from white to slightly dingy yellowish cream.
Stem: White, occasionally with brick stains or spots (especially in wounds). The bulb is usually coarsely scaly on the upper part with the scales in up to eight rows. The skirt-like ring on the stem can actually be two rings joined at their free edges.
Odor: The odor is similar to a combination of burnt sugar and cedar wood, but becomes more potent and unpleasant with maturity.

Distribution
In the United States, this species is known from as far north as Massachusetts, as far west as Indiana, and as far south as Tennessee and South Carolina.
Status
Amanita expert Rod Tulloss has provisionally named Amanita subcokeri as a similar species to Amanita cokeri.Habitat
Amanita subcokeri occurs in mixed forests. Possible symbionts include species of birch (Betula), pine (Pinus), oak (Quercus) and Basswood (Tilia), as well as Canadian Hemlock (Tsuga canadensis), Shellbark Hickory (Carya laciniosa), and American Beech (Fagus grandifolia).References:
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http://www.amanitaceae.org/?Amanita+subcokeri