How to identify Destroying Angel

To correctly identify Destroying Angel (Amanita bisporigera), check each of these features in order. Misidentification is the most common cause of mushroom poisoning, so cross-reference multiple sources.

Step-by-step identification

1. 1

   Cap

   Shape, color, surface texture, and diameter.

   The cap is 3-10 cm (1.2-3.9 in) in diameter, ovate to conical when young, becoming convex to almost flat with age. It is typically white, smooth, and dry, sometimes slightly sticky when moist. The margin is usually even and non-striate.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are free from the stem, close to crowded, and white. They remain white with age.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is 6-18 cm (2.4-7.1 in) long and 0.5-2 cm (0.2-0.8 in) thick, solid, becoming hollow with age. It is white, smooth or slightly fibrous, and tapers upwards from an enlarged base. A fragile, skirt-like annulus (ring) is present, often persistent. The most crucial feature is the large, sac-like, white volva (cup) at the base of the stem, which is often partially or entirely underground. Always dig carefully to excavate the entire base.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is white, firm, and does not change color when cut or bruised.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body is typically all white, sometimes with a pale yellow or pinkish tint in the center of the cap. It often emerges from an egg-like structure (universan veil).

6. 6

   Habitat

   Where it grows and on what substrate.

   Amanita bisporigera is a mycorrhizal fungus, forming symbiotic relationships with the roots of hardwoods, particularly oak (Quercus), hickory (Carya), and birch (Betula). It grows solitarily or scattered in deciduous and mixed forests.

Key Facts

Cap surfaces

Smooth, dry, sometimes slightly sticky when moist.

Growth Form

Solitary or scattered.

Spore Print

White.

Body color

Pure white, sometimes with a pale yellow or pinkish tint on the cap center.

Odor

Indistinct to slightly sweet, not diagnostic.

Flesh bruises

Does not bruise or change color.

Height

6-18 cm (2.4-7.1 in)

Cap Diameter

3-10 cm (1.2-3.9 in)

Fruit body characteristics

• Gill attachment: Free.
• Stem shape: Tapering upwards from an enlarged base.
• Stem surface: Smooth or slightly fibrous.
• Ring: Present, skirt-like, white, often fragile and may be lost.
• Stem cross-section: Solid, becoming hollow with age.

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