How to identify Velvet Rollrim

To correctly identify Velvet Rollrim (Paxillus involutus), 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 of the Velvet Rollrim is typically 5-12 cm in diameter, convex to flattened, and has a brownish color. The surface is velvety, and the margin is inrolled, especially in young specimens.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   The gills are yellowish-brown, decurrent (running down the stem), and close together. They bruise darker when damaged, which is a key identifying feature.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is short, stout, and typically the same color as the cap or slightly lighter. It is usually 2-8 cm long and 1-2 cm thick.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh of Paxillus involutus is yellowish-brown and can stain darker when cut or bruised.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body of Paxillus involutus typically has a cap and a stem. The cap is usually brownish and has a velvety texture, with an inrolled margin when young.

6. 6

   Habitat

   Where it grows and on what substrate.

   Paxillus involutus is commonly found in forests, parks, and disturbed areas, often near birch and other trees. It can grow in both coniferous and deciduous woodlands.

Key Facts

Cap surfaces

Velvety

Growth Form

Mycorrhizal

Spore Print

Brown

Body color

Brown

Odor

Earthy

Flesh bruises

Yes, darkens when bruised

Height

2-8 cm

Cap Diameter

5-12 cm

Fruit body characteristics

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

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