How to identify Dune Brittlestem

To correctly identify Dune Brittlestem (Psathyrella ammophila), 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 conical to convex, with a smooth surface. The color ranges from pale ochre to tan, often with a slightly darker center. The cap margin may be slightly incurved when young.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are closely spaced and adnate to adnexed. Initially, they are pale, but they darken to brown as the spores mature. The gill edges are typically even.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is slender and fragile, typically measuring 3 to 6 cm in length and 2 to 4 mm in diameter. It is often slightly bulbous at the base and has a smooth surface. The stem color is similar to the cap, ranging from pale ochre to tan.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is thin and fragile, with a pale color. It lacks any distinctive odor or taste.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body of Psathyrella ammophila is small and fragile, with a cap diameter typically ranging from 1 to 3 cm. The overall appearance is delicate and ephemeral.

6. 6

   Habitat

   Where it grows and on what substrate.

   Psathyrella ammophila is found in coastal regions, where it grows in association with sand dunes and other sandy substrates. It is often found growing in clusters or scattered groups.

Key Facts

Cap surfaces

Smooth

Growth Form

Gregarious

Spore Print

Dark brown

Body color

Tan to ochre

Odor

Indistinct

Flesh bruises

No bruising

Height

3-6 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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