Name:
Celtis laevigata - Fraxinus pennsylvanica - (Juglans nigra) / Asimina triloba / Carex grayi Floodplain Forest
Reference:
NatureServe Biotics 2019
Description:
This association is a levee forest of brownwater rivers in the Atlantic Coastal Plain of the Carolinas, possibly ranging north and south to adjacent states. It has been described from the Congaree River, South Carolina, and from the Roanoke River, North Carolina, where it occurs in two more-or-less distinct phases. Both phases have closed canopies codominated by <i>Acer negundo, Celtis laevigata, Fraxinus pennsylvanica, Liquidambar styraciflua</i>, and <i>Ulmus americana</i>. Subcanopies range from dense to sparse and are dominated by <i>Asimina triloba</i>. The relative abundance and diversity of understory herbs (e.g., <i>Carex grayi, Carex louisianica</i>) are inversely related to the abundance of <i>Asimina triloba</i>; however, <i>Arundinaria gigantea</i> often has a higher abundance under <i>Asimina</i>. Vines are also common, and important species include <i>Toxicodendron radicans, Parthenocissus quinquefolia</i>, and <i>Smilax rotundifolia</i>. In the Congaree Swamp National Monument, South Carolina, the mostly closed canopy of this community is dominated by <i>Celtis laevigata, Juglans nigra, Acer negundo, Liquidambar styraciflua</i>, and <i>Ulmus americana</i>. These species are important in the well-developed subcanopy also. These occurrences differ from the Roanoke River occurrences by having a lesser amount of tree importance contributed by <i>Fraxinus pennsylvanica</i> and by having substantial amounts of <i>Juglans nigra</i>. A variety of other tree species are possible in these strata; these species include <i>Fraxinus pennsylvanica, Platanus occidentalis, Quercus laurifolia, Diospyros virginiana, Carya cordiformis, Quercus pagoda, Morus rubra</i>, and others. The shrub layer ranges from sparse to well-developed and is dominated by <i>Asimina triloba</i> with <i>Lindera benzoin, Ilex decidua</i>, and likely other species present as well. The moderately dense understory is dominated by <i>Elymus virginicus</i>. Other typical species include <i>Carex grayi, Carex retroflexa, Chasmanthium latifolium, Elephantopus carolinianus, Leersia lenticularis, Polygonum virginianum, Sanicula canadensis, Carex bromoides, Glyceria striata, Laportea canadensis</i>, and others. The vine stratum is moderate, and many species are possible. Among these are <i>Bignonia capreolata, Berchemia scandens, Parthenocissus quinquefolia, Smilax bona-nox, Smilax tamnoides, Vitis rotundifolia, Matelea carolinensis, Cocculus carolinus</i>, and <i>Vitis vulpina</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:33518-{A1D586CF-6FEF-4D02-A445-68D4892F1E49}
Plot-observations of this Community Concept:
37
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