How to identify it?
Cap
Cap 1-4 cm across, convex, becoming flatter; bright orange when young, becoming paler and duller with age; surface bald, and sticky to slimy when wet. Flesh insubstantial, soft, moist, pallid or orangish. Taste mild or slightly mealy.
Gills
Gills adnexed, pale salmon to yellow-orange, and with deeply colored, orange-red edges, close or crowded, with reddish-orange edges.
Photo By John Carl Jacobs (JCJacobs) , used under CC-BY-SA-3.0 /Cropped and compressed from original Scientific Classification
Phylum
Club fungi Class
Mushroom-forming fungi Order
Gilled fungi Family
Bonnet mushrooms Genus
Bonnets Species
Orange mycena