Sycamore tar spot
Rhytisma acerinum
Safety assessment
Inedible
Based on reviewed safety sources.
Black, glossy spots on maple leaves caused by a fungus. Not edible, but a clear sign of the fungal world all around us.
Identification
- Forms black, glossy, raised spots ringed with yellow on maple leaves.
- Found almost wherever maples grow; leaves fall early.
Baltic distribution
- Latvia
- 59
- Lithuania
- 316
- Estonia
- 513
- Global
- 58658
Occurrence records in GBIF — not a claim that the species is absent elsewhere.
Safety first. This information is an educational reference, not a confirmation of an edible mushroom. Identifying fungi is difficult and mistakes can be dangerous. Never eat a mushroom unless you are completely certain of its identity, and consult a certified mycologist.