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Grzybiarz is a mobile app for mushroom foragers. Its on-device AI helps you spot fruiting bodies in the leaf litter and suggests a species from a photo, and the app keeps a private map of your finds. Everything runs on your phone and works fully offline in the forest without signal.

Lion's-mane mushroomHericium erinaceus

edible

Lion's-mane mushroomHericium erinaceus

Photo: (c) Katja Schulz, some rights reserved (CC BY)

Habitat

deciduous forests

beech forests

under oaks

Season

from August to November

Hericiaceae

8–40 cm

Season

At its peakThe peak lasts until early November and the season usually until late November.

Today · 22–28 Oct94% of peak

how often reportedpeak

Season

Aug–Nov

Peak

Sep–Nov

Reports

118Poland and neighbours

Curve from 118 observations (GBIF: Poland, Czechia, Slovakia, Germany), smoothed week by week. It shows when foragers most often report the species, not how much of it grows.

Key features

Fruit body spherical or cushion-shaped, white to cream, yellowing with age, hanging from trunks of deciduous trees (oak, beech). Spore-bearing surface of long (from 1 to 5 cm), hanging spines like hedgehog quills; no distinct stem; flesh white, soft, odorless.

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