Speckled alder

Ozone injury usually appears as black or purple spots (stipple), yellow or white bleached spots (chlorotic mottle, needle tip burn), or leaf browning (necrosis). Ozone may also cause premature leaf drop (senescence).

Healthy Speckled alder Leaves Courtesy, Cofrin Center for Biodiversity, University of Wisconsin at Green Bay

Healthy Speckled alder Berries Courtesy, borealforest.org

Healthy Speckled alder Courtesy, Cofrin Center for Biodiversity, University of Wisconsin at Green Bay