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Blue elderberry

Sambucus mexicana

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).


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Healthy Blue elderberry Plant with Flowers and Berries
Courtesy, USDA PLANTS Database


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Healthy Blue elderberry Plant
Courtesy, USDA PLANTS Database
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Healthy Blue elderberry Branch with Berries
Courtesy, USDA PLANTS Database


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Close-up View of Ozone Injury to Blue elderberry Leaf
Courtesy, USDA Ozone Biomonitoring Program


USDA Ozone Biomonitoring photograph
Ozone Injury to Blue elderberry Leaves
Courtesy, USDA Ozone Biomonitoring Program
photograph
Close-up View of Ozone Injury to Blue elderberry
Courtesy, USDA Ozone Biomonitoring Program


updated on 09/17/2006  I   http://nature.nps.gov/air/Pubs/bioindicators/blueElderberry.cfm   I  Email: Webmaster