Yellow-poplar

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 Yellow-poplar Leaf Courtesy, USDA PLANTS Database

Healthy Yellow-poplar Leaves Courtesy, USDA PLANTS Database

Healthy Yellow-poplar Flower Courtesy, USDA PLANTS Database

Ozone Injury to Yellow-poplar Leaves Courtesy, USDA PLANTS Database

Ozone Injury to Yellow-poplar Leaf Courtesy, USDA PLANTS Database

Close-up View of Ozone Injury to Yellow-poplar Leaf Courtesy, USDA PLANTS Database