Brown Roll-rim

Paxillus involutus

Type: gilled mushroom

Brown Roll-rim

Physical Characteristics

Convex to funnel-shaped cap with a characteristically inrolled margin, especially when young. The cap surface is brownish-ochre to olive-brown and can be slightly felted or tacky when moist. Gills are decurrent, yellowish, and bruise brown when touched. The stem is relatively short, stout, and similar in color to the cap.

Habitat & Growing Conditions

Grows on the ground in both deciduous and coniferous woodlands, as well as in gardens, parks, and heaths. It is commonly found near birch, oak, or pine trees.

Season & Fruiting Time

Typically found from late summer through late autumn (August to November in the Northern Hemisphere).

Similar Looking Species

Paxillus cuprinus (associated with deciduous trees, having a more metallic or copper-toned cap) and Paxillus obscurisporus (which is generally larger with a wider stem).

Ecological Role

Mycorrhizal fungus that forms symbiotic relationships with various tree species, aiding in nutrient and water uptake. It also has the ability to act saprotrophically under certain conditions.

Safety reminder

AI mushroom identification is a best-effort estimate and can be wrong. Never use it to decide whether a mushroom is safe to handle or eat — always confirm with a qualified mycologist before any consumption.

Identified on: 2/20/2026

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