This is a deadly poisonous mushroom. Please see Deadly Mushrooms of Nebraska by C. Brueggemann where it is treated as Amanita bisporigera.

The Great Felt Skirt Destroying Angel is a mycorrhizal mushroom that grows in soil in wooded habitats in the summer. It is white, has a membranous skirt on the stem, and has a bulbous base with a volva.

July 17th, 2023 Field Characteristics

• Growing solitarily on open mixed oak/hickory woodland ridge.
• Nearby Trees: Bitternut Hickory, Ash, American Hophornbeam, Black Oak, and distant Chinkapin Oak.
• All portions are white.
• Cap bald, slightly tacky.
• Lamellae free from stipe.
• Stipe with prominent annulus 1/4 down the stem and a large bulbous, sack-like volva at the base.
• Smell: Not distinctive.
• Taste: Not distinctive.
• KOH: Negative on cap (atypical of species) and slightly darkening stipe.
• Microscopy: basidia appear to have 2 sterigmata.