Atheniella aurantiidisca

Common Names: none
Synonyms: Mycena aurantiidisca
Description: Tiny, strikingly bright orange mushrooms, eventually fading to yellowish or whitish, especially at margins. Common in needle litter of PNW conifer forests.
Habitat/Season: Common on needle litter in moist conifer forests; usually occurs in small numbers under pine and Douglas fir.
Cap: Bright orange at first; fading to yellow or almost whitish starting at edges; less than 1″ across; cone-shaped, flaring slightly when mature; moist, striate.
Gills: Whitish at first, becoming yellowish; adnate, close to subdistant, narrow to slightly swollen in the middle.
Stem: Whitish with yellowish to orange base; base very slightly covered in fine fibers; fragile, thin, hollow.
Odor/Taste: mild
Spore Print: white
Lookalikes: Atheniella aurantiidisca differs from Atheniella adonis by a lack of pinkish tones on the cap. Mycena acicula is less likely to fade at margins, which are more yellowish, and Mycena oregonensis is more yellowish all over.
Edibility: not edible
Notes: Atheniella appear similar to Mycena, but are only distantly related.