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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.

Bulbous Honey FungusArmillaria gallica

conditionally edible

Bulbous Honey FungusArmillaria gallica

Photo: (c) Tina Ellegaard Poulsen, some rights reserved (CC BY)

Habitat

deciduous forests

mixed forests

beech forests

Season

from August to October

Physalacriaceae

3–10 cm

Season

EndingPast the peak. The season usually lasts until late October.

Today · 22–28 Oct97% of peak

how often reportedpeak

Season

Aug–Oct

Peak

Sep–Oct

Reports

273Poland and neighbours

Risk window

Sulphur Tuft grows at the same time

Both species grow together for about 6 wk a year. Most strongly from late September to mid-October.

Curve from 273 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 yellow-brown with delicate fibrous scales, paler toward the margin. Stem with a bulbously widened base and a delicate, cobweb-like, disappearing ring; often single or in small groups, does not form large clusters.

Reclassified: synonim DF -> Armillaria lutea [df-map 2026-06-23]

Similar (be careful)Confusions documented in our database

Sulphur TuftHypholoma fasciculare

toxic

The Bulbous Honey Fungus has a bulbous stem and a yellow cobweb-like ring; the Sulphur Tuft has a yellow-green cap, no ring, and is extremely bitter.

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