Naked brimcap is a mushroom in the Paxillaceae family. It can be found singly to grouped, on the ground or rotted wood, in mixed hardwood-conifer forests across the US. The cap varies in color from yellow brown, olive brown, to grayish brown and is up to 6 inches across. It is convex to broadly convex with a strongly inrolled, cottony margin. It can be smooth or finely hairy. The flesh is yellowish and turns brown when exposed to air. The gills are unusual and a good identifying component. The mushroom was once considered edible if cooked in Europe, but that has changed due to reported deaths. It initially causes nausea and vomiting and can be followed by an immunological allergic syndrome that can lead to kidney failure. Quick ID: CAP: Brown to reddish brown, dry to slimy in wet weather, covered with fine hairs that are often matted together; margin strongly enrolled especially when young. GILLS: Dirty yellow to olivaceous at maturity, crowded, forked, decurrent (descending down the stalk a short distance). STALK: Brown, smooth. ANNULUS: None. SPORE PRINT: Clay brown. Insects, Diseases, and Other Plant Problems: Suseptable to cobweb disease and fungus gnats.
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Also noted by NC State
Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell
apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.
The thick, dry stem is usually the same color as the cap and can be smooth to finely hairy.
Wildlife & Ecology
Native status
Unknown
Origin
USA, NC
Food & Medicine
Edibility
NOT EDIBLE!
Landscape Use
Garden tags
#poisonous #mushrooms #poisonous mushrooms
Problems & Resistance
Problems
Poisonous to Humans
Poison severity
High
Poison parts
Fruits; Stems
Poison symptoms
Highly toxic, may be fatal if eaten. May appear within an hour of ingestion and can include an acid-sour taste, cold extremities, stomach cramps, sweating, weakness, and coma. A separate set of symptoms of an immunological allergic syndrome that can lead to kidney failure.