A foraging companion

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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.

Species atlas
Wood MushroomAgaricus silvicola
edible
Wood MushroomAgaricus silvicola
Photo: (c) Nina Filippova, some rights reserved (CC BY)
Habitat
mixed forests
under spruce
deciduous forests
Season
from July to October
Agaricaceae
5–15 cm
Season
EndingPast the peak. The season usually lasts until late October.
Today · 22–28 Oct89% of peak
how often reportedpeak
Season
Jul–Oct
Peak
Aug–Oct
Reports
286Poland and neighbours
Risk window
Death Cap grows at the same timeBoth species grow together for about 14 wk a year. Most strongly from late August to late September.
Muchomor jadowityIn the forest together about 14 wk a year.
Curve from 286 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
Cap white to cream, slightly yellowing when touched, smooth and silky. Gills pale pink for a long time, then chocolate; stem slender with a bulbous base and a broad, hanging ring; flesh white with a strong smell of anise.
Reclassified: synonim iNat -> Agaricus sylvicola [taxon-fix 2026-06-08]
Similar (be careful)Confusions documented in our database
DeathcapAmanita phalloides
deadly
The Wood Mushroom has gills turning pinkish→chocolate and an anise smell; the Deathcap has white gills, a volva and an olive cap. Check the gill color under the cap.
European Destroying AngelAmanita virosa
deadly
The Wood Mushroom has darkening gills and an anise smell; A. virosa is entirely white with white gills and a volva at the base.
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Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Pieczarka leśna (Agaricus silvicola) — Edible · Grzybiarz