Name:
Fraxinus pennsylvanica - Platanus occidentalis - Ulmus americana Coastal Plain Floodplain Forest Alliance
Reference:
NatureServe Biotics 2019
Description:
Stands are dominated by some combination of <i>Fraxinus pennsylvanica, Platanus occidentalis</i>, and <i>Ulmus americana</i>. Examples may also contain the trees <i>Acer negundo, Acer rubrum, Acer saccharinum, Acer saccharum, Celtis laevigata, Celtis occidentalis, Juglans cinerea, Juglans nigra, Liquidambar styraciflua, Prunus serotina</i>, and <i>Ulmus rubra</i>, as well as the small trees and shrubs <i>Asimina triloba, Ilex decidua</i>, and <i>Lindera benzoin</i>, as well as the herbs <i>Boehmeria cylindrica, Carex grayi, Carex laevivaginata, Carex lupulina, Carex stricta, Carex retroflexa, Carpinus caroliniana, Chasmanthium latifolium, Commelina virginica, Glyceria septentrionalis, Leersia lenticularis</i>, and <i>Symplocarpus foetidus</i>. 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.
Accession Code:
urn:lsid:vegbank.org:commConcept:38921-{99D519EE-A41F-4863-8F39-1E07475F74A8}
Plot-observations of this Community Concept:
0
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