How to identify it?
Cap
Cap 1-8 cm across, convex at first, becoming flat; pale to deep orange-brown, with a paler, striate margin; surface smooth, slimy in wet weather. Flesh thin, white to yellowish. Taste mild and delicate.
Gills
Gills broadly or narrowly adnate, whitish to pale yellowish or pale buff, crowded or close.

Scientific Classification

Phylum
Club fungi Class
Mushroom-forming fungi Order
Gilled fungi Family
Physalacriaceae Genus
Flammulina Species
Enoki