How to identify Fairy Ring Mushroom

To correctly identify Fairy Ring Mushroom (Marasmius oreades), 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 2-5 cm in diameter, convex to flattened, and has a central bump (umbo). The color ranges from tan to buff, and it fades to pale when dry. The surface is smooth and dry.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are widely spaced, adnate to free, and cream-colored. They do not deliquesce (dissolve into ink).

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is tough, slender, and cartilaginous, with a color similar to the cap or paler. It is smooth and lacks a ring.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is thin, pliant, and has a mild, pleasant odor.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body is small and has a distinctive cap and stem.

6. 6

   Habitat

   Where it grows and on what substrate.

   Found in grassy areas, lawns, meadows, and pastures, often forming fairy rings.

Key Facts

Cap surfaces

Smooth, dry

Growth Form

Agaricoid

Spore Print

White

Body color

Tan, buff

Odor

Mild, almond-like

Flesh bruises

No bruising

Height

2-7 cm

Cap Diameter

2-5 cm

Fruit body characteristics

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

Explore Fairy Ring Mushroom