How to Identify Ribbed Earthstar

Scientific Name: Gyromitra infula

Ribbed Earthstar (Gyromitra infula) identification
Image source: MushroomObserver (CC BY-SA 3.0)

⚠️ Toxicity Warning

This species is recorded as highly toxic. Do not consume. Highly toxic and should not be consumed. Cooking does not eliminate the toxins present in this species.

Description

Gyromitra infula is characterized by its irregular, lobed cap that resembles a brain or a helmet. The cap is typically brown to reddish-brown and can reach up to 10 cm in diameter, with a distinctive ribbed appearance.

Key Identification Features

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

Habitat & Distribution

Habitat: Typically found in sandy or loamy soils, often in association with coniferous or deciduous trees.

Region: North America, Europe, and parts of Asia.

Seasonality

Fruits primarily in spring, often after snowmelt.

Typical months: Mar-May

Common Lookalikes

Always verify identification to avoid these similar species:

Related Species

Browse all species in the Mushroom Database →

Spotted Ribbed Earthstar? 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.

Download Mushroom Tracker

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