The grooved bonnet is one of a few dozen Mycena mushrooms that are bioluminescent. It is rare in North America but can be found throughout Europe and Japan in deciduous forests of oak or maple trees. In these forests, the mushroom, which is not edible, decomposes organic matter and supports nutrient-rich humusy soil.
Cap Diameter:
2 - 4 cm
Odor:
Subtle, indistinct mushroom aroma.
In This Article
Attributes
Similar Species
Tips for Finding
Clean and Preserve
Common Questions
General Info About Grooved bonnet
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Attributes of Grooved bonnet
Cap Diameter
2 - 4 cm
Height
6 - 12 cm
Cap
Cap 2 - 4 cm across; egg-shaped to conic, bell-shaped, convex; dark brownish-gray to black; with hairs to smooth; margin has furrows or grooves
Cap Shape
Bell-shaped, Central Bump
Cap Surfaces
Smooth, Visible lines or stripes
Gills
Adnexed; close; white, pink
Gill Attachment
Attached
Stem
Stem 6 - 15 cm long, 2 - 5 mm thick; white, reddish brown; brittle; surface smooth, with faintly powdered
Stem Shapes
Cylindrical
Stem Surfaces
Ribbed
Stem Cross Sections
Hollow or cottony hollow
Flesh
Thin; very hard; watery grayish to white
Ring
Ringless
Spore Print Color
White
Odor
Subtle, indistinct mushroom aroma.
Body Color
Brown
Black
Gray
White
Flesh Bruises
The flesh or milk does not discolor when bruised or cut.
