How to identify Dung-Roundhead

To correctly identify Dung-Roundhead (Agrocybe pediades), 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 1 to 3 cm in diameter, convex to flattened, and smooth. The color ranges from tan to pale brown, often with a slightly darker center. The cap surface is usually dry and may become slightly sticky when moist.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are adnate to adnexed, crowded, and initially pale tan, becoming brown as the spores mature. The gill edges are even.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is 2 to 5 cm long and 2 to 4 mm thick, cylindrical, and smooth. The color is pale brown to tan, often with a slightly darker base. The stem lacks a ring.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is thin and pale brown.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body of Agrocybe pediades is small to medium-sized.

6. 6

   Habitat

   Where it grows and on what substrate.

   Agrocybe pediades is commonly found in lawns, pastures, and other grassy areas. It often grows on nutrient-rich, disturbed ground and can appear after rain. It is a saprobic species, meaning it obtains nutrients from decaying organic matter.

Key Facts

Cap surfaces

Smooth, dry to slightly sticky

Growth Form

Gregarious

Spore Print

Brown

Body color

Tan to pale brown

Odor

Mild, fungal

Flesh bruises

Does not typically bruise

Height

2-5 cm

Cap Diameter

1-3 cm

Fruit body characteristics

• Gill attachment: Adnate to adnexed
• Stem shape: Cylindrical
• Stem surface: Smooth
• Ring: Absent
• Stem cross-section: Solid

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