Rhytisma acerinum

Taxobox
name = "Rhytisma acerinum"

---

image_width = 240px
image_caption = "Rhytisma acerinum" fungus on "Acer pseudoplatanus" leaf
regnum = Fungi
phylum = Ascomycota
classis = Leotiomycetes
subclassis = Leotiomycetidae
ordo = Rhytismatales
familia = Rhytismataceae
genus = "Rhytisma"
species = "R. acerinum"
binomial = "Rhytisma acerinum"
binomial_authority = Schwein., (1832)
synonyms = " "

Rhytisma acerinum is a plant pathogen. It commonly affects sycamores and maples in late Summer and Autumn. The common name of this disease is tar spot. This disease does not usually have an adverse effect on the trees' long-term health.Fact|date=September 2008