Species library · Mushrooms
Rhytisma acerinum
Sycamore Tar Spot is classed as poisonous in the Forage field guide. This page helps you identify it and tell it apart from similar species. It is not a foraging guide. Have every wild mushroom checked by a qualified mushroom expert before eating it.
If you suspect poisoning, call your local poison control center right away. If someone has trouble breathing, has a seizure or is unconscious, call emergency services. Don't wait for symptoms: with some poisonings they only start hours later. Keep any leftovers of the find, they help identify it.
Usually seen from August to October in the northern hemisphere. Found in Woodland, Woodland edges.
Photo: (c) Manuel R Popp, some rights reserved (CC BY), uploaded by Manuel R Popp · iNaturalist
Typical window in the northern hemisphere. The southern hemisphere runs about six months offset.
Sycamore Tar Spot is usually found in Woodland, Woodland edges.
In the Forage app, Sycamore Tar Spot has a full field guide entry with more photos, key features and the species it can be confused with.
Yes. Sycamore Tar Spot is classed as poisonous in the Forage field guide. Do not eat it. If you suspect poisoning, call your local poison control center right away, or emergency services if it is life-threatening.
Sycamore Tar Spot usually appears from August to October in temperate northern regions. The exact timing shifts with latitude, elevation and each year's weather.
Sycamore Tar Spot is usually found in Woodland, Woodland edges.
Forage helps you discover and identify wild plants, but identification is never 100% certain. Many edible plants have toxic lookalikes. Never eat anything you find based only on what this app tells you. Always confirm with a field guide, an experienced forager or a local expert. The season score tells you where to look, too: it’s not a guarantee. Mind conservation law and property rights as well.
Species photos via Wikimedia Commons and iNaturalist · full credits
