How to identify Black Trumpet

To correctly identify Black Trumpet (Craterellus cornucopioides), 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 funnel-shaped, often deeply depressed, and merges seamlessly with the stem. The color ranges from dark gray to black, and the surface is generally smooth to slightly wrinkled.

2. 2

   Gills

   Attachment to stem, color, and spacing.

   This mushroom lacks true gills. Instead, it has a smooth to slightly wrinkled undersurface that runs down the stem. The surface is typically the same color as the cap.

3. 3

   Stem

   Length, shape, surface, and any ring.

   The stem is hollow and continuous with the cap, forming the trumpet shape. It is typically the same color as the cap and may be slightly ribbed or ridged.

4. 4

   Flesh

   Color, texture, and bruising reaction.

   The flesh is thin and brittle, with a dark gray to black color. It has a mild, pleasant aroma when fresh.

5. 5

   Fruiting body

   Overall growth pattern.

   The fruiting body of Craterellus cornucopioides is typically trumpet-shaped, ranging from 3 to 15 cm in height. It is thin-fleshed and often has wavy or lobed edges.

6. 6

   Habitat

   Where it grows and on what substrate.

   Craterellus cornucopioides is commonly found in deciduous forests, particularly under oak and beech trees. It often grows in clusters and can be found from late summer to late fall.

Key Facts

Cap surfaces

Smooth to slightly wrinkled

Growth Form

Trumpet-shaped

Spore Print

White to pale yellow

Body color

Dark gray to black

Odor

Mild, pleasant

Flesh bruises

Does not typically bruise

Height

3-15 cm

Cap Diameter

2-8 cm

Fruit body characteristics

• Gill attachment: Absent (smooth to wrinkled undersurface)
• Stem shape: Cylindrical, hollow
• Stem surface: Smooth to slightly ridged
• Ring: Absent
• Stem cross-section: Hollow

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