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Dense, bushy branches (witches' brooms) caused by juniper rust, Gymnosporangium sp. infecting juniper.

Two, rounded growths of dense, green juniper foliage infected with a Gymnosporangium sp. rust fungus. Credit: USDA Forest Service - Ogden, Bugwood.org
Dense, bushy branches (witches' brooms) caused by juniper rust, Gymnosporangium sp. infecting juniper. Credit: USDA Forest Service - Ogden, Bugwood.org
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