Considering all sites together, silver maple trees had the highest importance value followed by ash [primarily green but including a few black ash (Fraxinus nigra
)], cottonwood, American elm, and the white oak subgenus.
The United States is home to several species of ash, including the commercially viable Fraxinus americana (white ash), Fraxinus pennsylvanica (green ash), Fraxinus nigra
(brown and black ash), Fraxinus latifola and Fraxinus velutina (Oregon ash), and Fraxinus quadrangulata (blue ash).
The moat was surrounded by a Salix nigra zone that graded into swamp forest dominated by Acer rubrum, Fraxinus nigra
FRAXINUS AMERICANA AND RELATED SPECIES FRAXINUS PENNSYLVANICA, FRAXINUS NIGRA
AND FRAXINUS VELUTINA AND FRAXINUS LATIFOLIA OF THE FAMILY OLEACEAE
Of the species restricted to the shaded seep, Fraxinus nigra
(black ash) seedlings were the most common (IV of 7.2), followed by the nonnative Alliaria petiolata, and five other species with low IVs that were rarely encountered (Table 1).
Both the three-furrowed ash pollen type (Fraxinus nigra
), and the four-furrowed pollen type, produced by F.
Various trees besides pines and hemlocks grow along the one-mile loop, such as red maple (Acer rubrum), striped maple (Acer pennsylvanicum), black ash (Fraxinus nigra
), yellow birch (Betula alleghaniensis), and hornbeam (Ostrya virginiana).
In this study we examined the dynamics of black ash (Fraxinus nigra
Marsh.) populations growing on Lake Duparquet's floodplains in relation to the effect of increasing flood levels.
Hardwood and mixed wood swamps are common, composed of Thuja occidentalis, Juniperus communis, Picea mariana, Fraxinus nigra
, Acer rubrum, and Ulmus americana (Rowe 1977).
Don], American elm, black ash (Fraxinus nigra
Marsh.), and silver maple.