Brown roll-rim
Paxillus involutus · 卷边桩菇
Common桩菇科⚠️ Poisonous
Reference sources list this as a poisonous mushroom.
The same species can be described differently across regions and stages of maturity, and countless look-alike species cannot be told apart by eye. Never use the information on this page to judge whether a real mushroom is safe to eat.
How to Tell
- Cap margin distinctly inrolled, yellowish brown
- Gills run down the stem, browning when bruised
- Common under birch and other hardwoods
ID notes are compiled by AI from public sources, not reviewed by a mycologist, for learning only — never a basis for foraging.
Basics
- Family
- 桩菇科
- Hymenium
- Gills
- Grows On
- Mycorrhizal
- How Big
- 5–15 cm (cap diameter)
- Encounter Rate
- Common
- Habitat
- Ground in birch and oak woods
Easily Confused With
Saffron milk capSaffron milk cap oozes orange-red latex when cut; brown roll-rim has no latex, and its gills only bruise brown when pressed.
Blackening brittlegillBlackening brittlegill has thick, widely spaced gills that turn red then black when damaged; brown roll-rim has crowded gills and a distinctly inrolled cap margin.Fun Fact
It was long regarded as an edible mushroom, until repeated consumption was found to trigger fatal immune-mediated blood destruction in some people — the danger doesn't come from a single meal, but from the body slowly becoming sensitized.
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