Tar Spot of Maple Rhytisma americanum Hudler & Banik  

Description:

Fruiting body: Black, irregular/circular, slightly raised spots with wrinkles/ridges (J. Solem, pers. comm.).

Where to find:

Solitary or groups of raised black spots on decaying maple leaves (J. Solem, pers. comm.).

There are 3 records in the project database.

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Tar Spot of Maple (lower right) on a Silver Maple leaf in Howard Co., Maryland (10/24/2017). Photo by Joanne Solem. (MBP list)

Tar Spot of Maple (closeupo of stoma) on a Silver Maple leaf in Howard Co., Maryland (10/24/2017). Photo by Joanne Solem. (MBP list)

Tar Spot of Maple on a Red Maple leaf in Howard Co., Maryland (10/24/2017). Photo by Joanne Solem. (MBP list)

Tar Spot of Maple on a Sugar Maple leaf in Howard Co., Maryland (10/29/2017). Photo by Joanne Solem. (MBP list)


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