Fraxinus nigra (Black Ash)
Fraxinus nigra (Black Ash) growing in a forested wetland. The bulbous base along with wide spreading roots help to stabilize the tree in the soggy soils where it grows. The roots of Black Ash are in some situations partially exposed above the wet soil. These roots will have many corky white growths called lenticels which help the tree exchange gases between its internal tissues and the atmosphere.
''Fraxinus nigra'', the black ash, is a species of ash native to much of eastern Canada and the northeastern United States, from western Newfoundland west to southeastern Manitoba, and south to Illinois and northern Virginia. Formerly abundant, as of 2014 the species is threatened with near total extirpation throughout its range, as a result of infestation by a parasitic insect known as the emerald ash borer.
