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Groundnut

Apios americana

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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Photo of Healthy Groundnut
Courtesy, USDA PLANTS Database
photograph
Groundnut Leaves
Courtesy, USDA Natural Resources Conservation Service

photograph
Photo of Groundnut
Courtesy, USDA Natural Resources Conservation Service
photograph
Groundnut Leaves
Courtesy, USDA Natural Resources Conservation Service
updated on 09/17/2006  I   http://www.nature.nps.gov/air/Pubs/bioindicators/groundnut.cfm   I  Email: Webmaster