Common (Translated Scientific) Name: Green Ash - American Sycamore - American Elm Coastal Plain Floodplain Forest Alliance

Colloquial Name: Coastal Plain Sycamore - Green Ash - Elm Floodplain Forest

Hierarchy Level:  Alliance

Type Concept: Stands are dominated by some combination of Fraxinus pennsylvanica, Platanus occidentalis, and Ulmus americana. Examples may also contain the trees Acer negundo, Acer rubrum, Acer saccharinum, Acer saccharum, Celtis laevigata, Celtis occidentalis, Juglans cinerea, Juglans nigra, Liquidambar styraciflua, Prunus serotina, and Ulmus rubra, as well as the small trees and shrubs Asimina triloba, Ilex decidua, and Lindera benzoin, as well as the herbs Boehmeria cylindrica, Carex grayi, Carex laevivaginata, Carex lupulina, Carex stricta, Carex retroflexa, Carpinus caroliniana, Chasmanthium latifolium, Commelina virginica, Glyceria septentrionalis, Leersia lenticularis, and Symplocarpus foetidus. This alliance is primarily found in the Atlantic Coastal Plain, East Gulf Coastal Plain, and adjacent Piedmont from New Jersey (and possibly Pennsylvania) south and west to Alabama and possibly Mississippi. The associations attributed to this alliance are primarily temporarily flooded, but some have longer hydroperiods and are called seasonally flooded. The temporarily flooded forests of this alliance occur on base-rich alluvial sites in floodplains of large and small alluvial or brownwater rivers. Landforms include low ridges, terrace flats, and sloughs of first bottoms. Species composition differs somewhat among different geographies and topographic positions. The wetter stands occupy level or nearly level soils that formed in water-deposited clayey or loamy sediments on floodplains of rivers and large perennial streams in the Coastal Plain and adjacent Piedmont. These soils are flooded or saturated for a significant portion of the growing season, and water may be ponded for most of the year in shallow depressions.

Diagnostic Characteristics: This alliance is primarily found in the Atlantic Coastal Plain, East Gulf Coastal Plain, and adjacent Piedmont from New Jersey (and possibly Pennsylvania) south and west to Alabama and possibly Mississippi. Stands are dominated by some combination of Fraxinus pennsylvanica, Platanus occidentalis, and Ulmus americana. This combination of floristics and biogeography is diagnostic.

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available

note: No Data Available