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
Stinking DapperlingLepiota cristata
harmful
Stinking DapperlingLepiota cristata
Photo: (c) SiphonophoreSlinger, some rights reserved (CC BY)
Habitat
deciduous forests
mixed forests
parks, treelines
meadows, pastures
Season
from July to October
Agaricaceae
2–5 cm
Season
EndingPast the peak. The season usually lasts until late October.
Today · 22–28 Oct71% of peak
how often reportedpeak
Season
Jul–Oct
Peak
Sep–Oct
Reports
602Poland and neighbours
Risk window
Deadly dapperling grows at the same timeBoth species grow together for about 12 wk a year. Most strongly from early September to early October.
Czubajeczka cielistaIn the forest together about 12 wk a year.
Curve from 602 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
Small cap with a red-brown, smooth center (disc) and concentrically arranged small rusty brown scales on a white background. Gills white, free; stem thin, white-pinkish, with a faint ring; unpleasant rubbery-chemical smell. Considered poisonous, not suitable for picking.
Reclassified: reclassified from 'toxic' per adversarial verify
Similar (be careful)Confusions documented in our database
Deadly dapperlingLepiota brunneoincarnata
deadly
The Stinking Dapperling has a sickly smell of rubber/gas and small brown scales; Lepiota brunneoincarnata has pinkish-brown concentric scales and contains AMATOXINS (deadly). All small Lepiota species: discard.
Deadly dapperlingLepiota brunneoincarnata
deadly
The Stinking Dapperling has a sickly smell of rubber/gas and small brown scales; Lepiota brunneoincarnata has pinkish-brown concentric scales and contains AMATOXINS (deadly). All small Lepiota species: discard.
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Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Czubajeczka grzebieniasta (Lepiota cristata) — Harmful · Grzybiarz