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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.

Cowboy's HandkerchiefHygrophorus eburneus

edible

Cowboy's HandkerchiefHygrophorus eburneus

Photo: (c) Akr, some rights reserved (CC BY)

Habitat

beech forests

deciduous forests

mixed forests

Season

from September to November

Hygrophoraceae

2–8 cm

Season

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

Today · 22–28 Oct100% of peak

how often reportedpeak

Season

Sep–Nov

Peak

Oct–Nov

Reports

467Poland and neighbours

Risk window

European Destroying Angel grows at the same time

Both species grow together for about 6 wk a year.

Curve from 467 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 pure white, convex, then flat, strongly slimy (even slippery) in any weather. Gills white, waxy, distant, decurrent; stem white, flimsy, slimy at the top; characteristic goat-like/sweetish smell. Mycorrhizal with beech.

Similar (be careful)Confusions documented in our database

European Destroying AngelAmanita virosa

deadly

The Cowboy's Handkerchief is entirely white, slimy and has NO volva; A. virosa has a ring and a volva at the base. For every white mushroom, dig up the whole stem.

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