canada | ontario | acer saccharum subsp. nigrum | subspecies | 6 | 0 |
canada | quebec | acer saccharum subsp. nigrum | subspecies | 2 | 0 |
united states | | acer saccharum subsp. nigrum | subspecies | 3 | 0 |
united states | new york | acer saccharum subsp. nigrum | subspecies | 4 | 0 |
united states | south carolina | acer saccharum subsp. nigrum | subspecies | 1 | 0 |
united states | west virginia | acer saccharum subsp. nigrum | subspecies | 1 | 0 |