Brown Roll-rim

Paxillus involutus

Type: gilled mushroom

Brown Roll-rim

Physical Characteristics

Funnel-shaped cap with a deeply incurved (rolled) margin. Cap color ranges from yellowish-brown to olive-brown, often staining darker when bruised. Gills are decurrent, yellowish, and also stain brown upon handling. Stem is short and stout, similar in color to the cap. Spore print is brown.

Habitat & Growing Conditions

Commonly found on the ground in both coniferous and deciduous forests, often associated with birch, oak, or pine trees. Also frequently appears in gardens, parks, and heaths where tree roots are present.

Season & Fruiting Time

Typically fruits from late summer through autumn, especially after periods of moderate rainfall.

Similar Looking Species

Paxillus rubicundulus (often smaller and associated with alder trees) and Tapinella atrotomentosa (which features a thick, dark brown velvety stem and grows on wood).

Ecological Role

Ectomycorrhizal fungus that forms mutually beneficial relationships with various tree species, aiding in nutrient and water absorption for the tree while receiving carbohydrates in return.

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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