How to identify Pluteus americanus

To correctly identify Pluteus americanus (Pluteus americanus), 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 typically 5-15 cm in diameter, convex to flattened, and brownish in color. The surface can be smooth or slightly wrinkled.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are free from the stem, crowded, and white to pinkish in color as the spores mature.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is typically 5-10 cm long and 1-2 cm thick, white to pale brown, and lacks a ring or volva.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   White and does not change color when bruised.

5. 5

   Fruiting body

   Overall growth pattern.

   Medium to large size mushroom with a distinct cap and stem.

6. 6

   Habitat

   Where it grows and on what substrate.

   Grows on decaying hardwood.

Key Facts

Cap surfaces

Smooth to slightly wrinkled

Growth Form

Solitary or in small groups

Spore Print

Pink

Body color

Brownish cap, white to pale brown stem

Odor

Mild, not distinctive

Flesh bruises

No color change

Height

5-10 cm

Cap Diameter

5-15 cm

Fruit body characteristics

• Gill attachment: Free
• Stem shape: Cylindrical
• Stem surface: Smooth
• Ring: Absent
• Stem cross-section: Solid

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