Wikispecies has information related to Acer rubrum.

2 days agoKEZI-TV P.O. Box Springfield, OR USA Roseburg Office PO BOX Roseburg, OR USA Street Address KEZI-TV Chad Dr. Eugene, OR USA PhoneFaxBusiness OfficeNewsroom Roseburg Office(News)(Sales). Maple Gall Mites (Eriophyidae) Bumpy growths caused by maple gall mites cover silver maple leaves. If you have a maple tree, you may have noticed weird growths on the leaves in some years. These strange swellings are plant galls caused by the feeding of tiny eriophyid mites on newly developing foliage.

The mites, less than 2mm long, are too. Jul 22, 1. Maple Tree Tar Spot.

Small Rufacer rubrum L.

Identification: Black spots that range in size from a pin-prick to the size of a half dollar (4 cm).Some reports say that the spots can get as big as two inches. Caused By: Fungi that tend to hide in leaf treeclearing.baric species include Rhytisma acerinum, R. americanum, and R. punctatum.; Season: Late summer and autumn Susceptible Species: Norway, silver, sycamore, and Author: Charlotte Gerber. KEZI-TV P.O. Box Springfield, OR USA Roseburg Office PO BOX Roseburg, OR USA Street Address KEZI-TV Chad Dr.

Eugene, OR USA PhoneFaxBusiness OfficeNewsroom Roseburg OfficeApr 16, This maple tree's fall color is usually a very attractive red, although, in some years or conditions, it may instead display reddish-green or orange foliage. Native Area: Central and eastern China USDA Growing Zones: 4–8.