Fungus · GBIF taxon 2554716
Sweet Tooth Mushroom
Hydnum repandumAlso known as Wood Hedgehog, Hedgehog Mushroom, Pig's Trotter
Sweet Tooth Mushrooms form mycorrhizal relationships with a wide variety of deciduous and coniferous trees, helping host roots absorb minerals from the surrounding soil. Instead of traditional gills or pores, the underside of the pale cream to buff cap features dense, hanging spines or teeth that release white spores at maturity. These fungi emerge in late summer and autumn, appearing singly, in scattered groups, or occasionally fusing into dense fairy rings across the forest floor.
Tooth FungusMycorrhizalForest Dweller
1 / 7—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Mycorrhizal (symbiotic with tree roots)
Predators
- Slugs
- Fungus Gnats
- Squirrels
ThreatsHabitat loss, forest clearcutting, heavy soil compaction
HabitatsDeciduous and coniferous forests, woodland soil, mossy leaf litter
Life spanFruiting bodies persist 1–3 weeks; underground mycelium lives indefinitely
Size / weightNot available
Classification
- FamilyHydnaceae
- SpeciesHydnum repandum
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Many edible mushrooms have toxic look-alikes; never eat wild fungi based on app identification alone.
Responsible observation
- Underneath Inspection: Gently peek underneath the cap to observe the distinctive hanging spines instead of gills.
- Soil Preservation: Avoid disturbing surrounding moss and root systems when inspecting forest fungi.
- Habitat Context: Note nearby host trees such as beech, oak, spruce, or pine to identify local mycorrhizal partners.
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