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How to Identify Inky Cap

Entoloma sinuatum
POISONOUS — DO NOT CONSUME Season // Aug-Oct Family // Entolomataceae

Description

Entoloma sinuatum is characterized by its distinctive, wavy-edged cap that can range from pale to dark brown. The gills are closely spaced and pinkish in color, and the stem is slender and often has a bulbous base.

Key Identification Features

Field marks recorded for this species. Work through all of them, not just one:

  • Wavy-edged cap
  • Pink gills
  • Slender stem
  • Bulbous base
  • Flesh that bruises pink

Specimen Profile

FamilyEntolomataceae
GenusEntoloma
EdibilityPoisonous — do not consume
Toxicityhigh
SeasonAug-Oct
HabitatTypically found in grassy areas, particularly in pastures and meadows.
RegionWidely distributed across Europe and North America.

Habitat & Distribution

Habitat: Typically found in grassy areas, particularly in pastures and meadows.

Region: Widely distributed across Europe and North America.

Seasonality

Fruits primarily in late summer to early autumn.

Typical months: Aug-Oct

Common Lookalikes

Always verify identification to avoid these similar species. The differentiator is the point — learn the one or two tells that separate them:

Entoloma rhodopolium (unknown)

HOW TO TELL APART

Similar appearance but has a more uniform cap color and does not bruise pink.

Clitocybe rivulosa (poisonous)

HOW TO TELL APART

Has a more funnel-shaped cap and lacks the wavy edges.

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Spotted Inky Cap? Map it

Pin the sighting and compare this species against its lookalikes in the offline database — confusion runs both ways, and knowing where toxic species fruit makes every future ID safer.

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Disclaimer: This guide is for educational purposes only. Never consume a wild mushroom unless you are 100% certain of its identification.