New York distribution map for <i>Acer negundo</i> var <i>violaceum</i>
USDA Natural Resources Conservation Service
2012-07-18
<a rel="nofollow" class="external text" href="https://arcmapper.sc.egov.usda.gov/PlantMapper.asp?h=1300&amp;w=2000&amp;cmd=newmap&amp;state=36&amp;county=36047&amp;symbol=Acer_negundo_var_violaceum">USDA Natural Resources Conservation Service PLANTS Database</a>