Fraxinus americana (white ash or American ash) is a species of ash treenative to eastern and central North America. It is found in mesophytichardwood forests from Nova Scotia west to Minnesota, south to northern Florida, and southwest to eastern Texas.Family:OleaceaeGenus:FraxinusSpecies:F. americana Solution Fraxinus americana (white ash or American ash) is a species of ash treenative to eastern and central North America. It is found in mesophytichardwood forests from Nova Scotia west to Minnesota, south to northern Florida, and southwest to eastern Texas.Family:OleaceaeGenus:FraxinusSpecies:F. americana.