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American elder

Sambucus canadensis

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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Flowering American elder
Courtesy, Dan Tenaglia, missouriplants.com

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Close-up View of American elder Flower
Courtesy, Dan Tenaglia, missouriplants.com
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American elder Fruit,
Courtesy Dan Tenaglia, missouriplants.com

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Ozone Injury to American elder Leaf
Courtesy, Dr. Donald D. Davis, Penn State University
updated on 09/17/2006  I   http://www.nature.nps.gov/air/Pubs/bioindicators/americanElder.cfm   I  Email: Webmaster