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Evening primrose

Oenothera elata

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
Healthy Evening primose Plant
Courtesy, USDA PLANTS Database
photograph
Healthy Evening primose Flowers
Courtesy, USDA PLANTS Database
updated on 09/17/2006  I   http://www.nature.nps.gov/air/Pubs/bioindicators/eveningPrimrose.cfm   I  Email: Webmaster