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White sagebrush

Artemisia ludoviciana

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).


photograph
White sagebrush
Courtesy, USDA Natural Resources Conservation Service
photograph
White sagebrush
Courtesy, North Haven Gardens

photograph
White sagebrush
Courtesy, USDA Natural Resources Conservation Service
updated on 09/17/2006  I   http://nature.nps.gov/air/Pubs/bioindicators/whiteSagebrush.cfm   I  Email: Webmaster