This is a microscopic fungus. Observation without microscopic confirmation are speculative.
Fruiting body: Black, irregular/circular, slightly raised spots with wrinkles/ridges (J. Solem, pers. comm.). Observation of microscopic features is necessary to distinguish this species from other fungi causing tar spots (e.g., Rhytisma acerinum).
Solitary or groups of raised black spots on decaying maple leaves (J. Solem, pers. comm.).
There are 23 records in the project database.
GA | AL | WA | FR | CL | MO | HO | BA | BC | HA | CE | PG | AA | CV | CH | SM | KE | QA | CN | TA | DO | WI | SO | WO |