How to identify it?
Cap
Cap 2.5-6 cm across, conical at first, becoming flat; golden-yellow to brownish orange, darker at the center; surface smooth. Flesh exquisite, yellow to orange. Taste bitter.
Gills
Gills adnexed, yellow, turning rusty orange as the spores mature, crowded.

Scientific Classification

Phylum
Club fungi Class
Mushroom-forming fungi Order
Gilled fungi Family
Hymenogastraceae Genus
Rustgills Species
Scaly rustgill