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The Common Fiberhead (Inocybe geophylla) is a small, rather nondescript mushroom often found in various habitats. It is characterized by its fibrous cap surface and earthy smell. While not considered deadly, it contains muscarine and should be avoided.
How to Identify
- Cap
- Conical to convex, becoming flattened with age; color varies from whitish to yellowish-brown; surface is radially fibrillose.
- Gills
- Crowded, adnate to adnexed, pale clay color becoming brownish with age.
- Stem
- Cylindrical, slender, whitish to pale brown, smooth to slightly fibrillose.
- Flesh
- Whitish to pale brown.
- Fruiting body
- Small to medium-sized mushroom.
- Habitat
- Woodland, grassland, and disturbed soil.
Key Facts
- Cap surfaces: Radially fibrillose
- Growth Form: Solitary to scattered
- Spore Print: Brown
- Body color: Whitish to yellowish-brown
- Odor: Earthy or spermatic
- Flesh bruises: No significant bruising
- Height: 3-7 cm
- Cap Diameter: 1-4 cm
- Nutrient gathering: Mycorrhizal
Toxic
Moderate ToxicityContains muscarine, which can cause SLUDGE symptoms (Salivation, Lacrimation, Urination, Defecation, Gastrointestinal distress, Emesis).
Quick Check
- Odor: Earthy or spermatic
- Fruiting: Autumn
- Substrate: Soil
Where to Find
Woodland
Found in deciduous and coniferous woods.
Grassland
Grows in grassy areas such as lawns and meadows.
Disturbed Soil
Occurs in disturbed soil areas.
Finding Tips
Cap Appearance
Look for small, brownish mushrooms with a fibrous cap surface.
Odor
Check for an earthy or spermatic odor.
Habitat
Search in both wooded and grassy areas.
Similar Species
Inocybe sericeophylla
mushroom
Also known as: Silky Fiberhead
Inocybe rimosa
mushroom
Also known as: Split Fiberhead
Scientific Classification
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Agaricales
- Family
- Inocybaceae
- Genus
- Inocybe
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