Appearance
The stem is tough and thin, up to 20 mm tall, bright yellow at the top becoming progressively orange towards the base.The gills are adnate, subdistant, and yellowish, becoming lighter in age; and the spore print is white. This mushroom is saprobic and found exclusively on hickory nuts and walnuts in eastern North America. The specific epithet ''crocea'' refers to the orange color.
The cap is vivid yellow, conical to broadly convex cap and up to 15 mm in diameter. When young the cap tends to be conical or bell-shaped becoming plane or flat at maturity. The margin is striated. The surface is moist, glabrous, and somewhat hygrophanous.
The flesh is thin, pallid, and yellowish. Odor and taste are not distinctive. The gills have an adnate attachment and are a pale yellowish color. They are subdistantly spaced. The sturdy stem is 10 to 20 mm long by 1 to 1.5 mm thick.
The stipe is central, equal, and dark orange to yellowishThe spores are 7–9 x 4–5 µm, smooth, and elliptical, and weakly amyloid to inamyloid.
Naming
''Mycena strobilinoides'' is similar to ''M. crocea'', but is found in needle beds under conifers. ''Atheniella adonis'' has a fragile stem and a more reddish-pink coloration.The mushroom is commonly known as the "walnut mycena" and was previously and commonly misidentified as ''Mycena luteopallens''.
Habitat
''Mycena crocea'' are found exclusively on hickory nuts and walnuts in eastern North America.References:
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