DCHP-1 Online
swamp ash 
one of several ash trees, especially Fraxinus nigra, the black ash.
- 1801 The greatest proportion is shaded with large trees, such as the liard, the swamp-ash, and the willow.
- 1861 The swamp Ash . . . is prized by the Indians, by whom its wood is used in making baskets, &c.
- 1956 Black ash [is also called] Swamp ash. . . .
- 1801 The greatest proportion is shaded with large trees, such as the liard, the swamp-ash, and the willow.