Explore Air

Douglas' sagewort

Artemisia douglasiana

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
Douglas' sagewort Leaves
Courtesy, Berkeley Digital Library Project
photograph
Douglas' sagewort Plant
Courtesy, Natural Resources Conservation Service USDA

photograph
Douglas' sagewort Leaves
Courtesy, California Lutheran University
updated on 09/17/2006  I   http://nature.nps.gov/air/Pubs/bioindicators/douglasSagewort.cfm   I  Email: Webmaster