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
Peppery MilkcapLactarius piperatus
inedible
Peppery MilkcapLactarius piperatus
Photo: no rights reserved
Habitat
deciduous forests
mixed forests
under oaks
beech forests
Season
from July to October
Russulaceae
5–16 cm
Season
Out of seasonOut of season. It usually grows from mid-July to mid-October.
Today · 22–28 Octout of season
how often reportedpeak
Season
Jul–Oct
Peak
Aug–Sep
Reports
–estimate
Too few observations for a curve. The season shape is an estimate from the atlas months.
Key features
Cap white, cream-ochre with age, funnel-shaped, dry. Gills very crowded, narrow, running down the stem (diagnostic: much more crowded than in L. vellereus). Milk white, abundant, unchanging, EXTREMELY acrid/burning (like pepper). Inedible in the EU; the tradition of pickling in the east requires long soaking.
Reclassified: synonim iNat -> Lactifluus piperatus [taxon-fix 2026-06-08]
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Grzybiarz
Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Mleczaj pieprzowy (Lactarius piperatus) — Inedible · Grzybiarz