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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.

Fluted bird's nest fungusCyathus striatus

inedible

Fluted bird's nest fungusCyathus striatus

Photo: (c) Alexis Tinker-Tsavalas, some rights reserved (CC BY)

Habitat

deciduous forests

mixed forests

parks, treelines

Season

from July to November

Agaricaceae

– cm

Season

EndingPast the peak. The season usually lasts until mid-November.

Today · 22–28 Oct63% of peak

how often reportedpeak

Season

Jul–Nov

Peak

Aug–Oct

Reports

173from Poland, few

Curve from 173 observations (iNaturalist, Poland), smoothed week by week. It shows when foragers most often report the species, not how much of it grows.

Key features

Tiny fruit bodies shaped like an inverted bell or goblet, brown and shaggy outside, smooth and longitudinally striate inside, silvery gray. Inside lie small, lens-shaped peridioles (like miniature eggs). Grows in clusters on rotting wood and litter.

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