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Cutleaf coneflower


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 Cutleaf coneflower Plant
Courtesy, Art Chappelka, Auburn University
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Healthy Cutleaf coneflower Flowers
Courtesy, Art Chappelka, Auburn University


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Ozone Injury to Cutleaf coneflower leaf
Courtesy, Art Chappelka, Auburn University
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Cutleaf coneflower Leaves with Ozone Injury
Courtesy, Art Chappelka, Auburn University
updated on 09/17/2006  I   http://nature.nps.gov/air/Pubs/bioindicators/cutleaf.cfm   I  Email: Webmaster