Print Report

CEGL006606 Acer rubrum - Fraxinus pennsylvanica / Saururus cernuus Swamp Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Red Maple - Green Ash / Lizard''s-tail Swamp Forest

Colloquial Name: Chesapeake-Piedmont Red Maple / Lizard''s-tail Swamp Forest

Hierarchy Level:  Association

Type Concept: This red maple swamp community of the Mid-Atlantic Coastal Plain of the Chesapeake Bay and Piedmont regions occurs on poorly drained to very poorly drained soils on flats and along watercourses that are seasonally to semipermanently flooded. The organic horizon is of variable depth and overlies sandy or silt clay loam soils. This swamp has pronounced hummock-and-hollow microtopography. The tree canopy is closed to partially open and dominated by Acer rubrum and Fraxinus pennsylvanica. Other canopy associates may include Nyssa sylvatica, Liquidambar styraciflua, Ulmus americana, Quercus lyrata, Quercus phellos, Quercus lyrata, and Populus heterophylla. The shrub layer includes Lindera benzoin, Eubotrys racemosa, Ilex verticillata, Viburnum spp., and Fraxinus pennsylvanica saplings. The herb layer is characterized by Saururus cernuus, Peltandra virginica, Boehmeria cylindrica, Triadenum walteri, Cinna arundinacea, Pilea pumila, Impatiens capensis, Osmunda regalis, Leersia oryzoides, Leersia virginica, Glyceria striata, Commelina virginica, Rumex verticillatus, Carex spp., and Polygonum arifolium.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Classification is supported by analysis of a 1250-plot regional dataset compiled for the NCR and MAR national parks vegetation mapping projects. In that analysis, this association was represented by 22 Maryland and Virginia plots.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: This forest type is characterized by a well-developed tree canopy codominated by Acer rubrum and Fraxinus pennsylvanica in variable proportions. Other canopy associates may include Nyssa sylvatica, Quercus phellos, Quercus lyrata, Ulmus americana, and Populus heterophylla. At the southern end of the range, Nyssa biflora and Taxodium distichum may be minor associates. The shrub layer is of variable cover but usually not dense. The most common species are Lindera benzoin, Eubotrys racemosa (= Leucothoe racemosa), Vaccinium corymbosum, Ilex verticillata, Carpinus caroliniana, Rosa palustris, and Viburnum dentatum. Other shrub associates may include Rhododendron viscosum, Cephalanthus occidentalis, Alnus serrulata, and Cornus amomum. The herb layer is diverse and generally characterized by abundant Saururus cernuus, typically in hollows. Other associates are many and varied but generally include Peltandra virginica, Impatiens capensis, Pontederia cordata, Boehmeria cylindrica, Glyceria spp., Cinna arundinacea, Bidens connata, Thelypteris palustris, Onoclea sensibilis, Osmunda regalis, Carex stricta, Carex lurida, Carex crinita, Triadenum walteri, Lobelia cardinalis, Lycopus virginicus, Pilea pumila, Carex tribuloides, Polygonum punctatum, Polygonum arifolium, Cicuta maculata, Leersia oryzoides, Galium obtusum, Commelina virginica, and others. Vines may include Toxicodendron radicans, Smilax rotundifolia, Campsis radicans, and Parthenocissus quinquefolia. Mosses are generally sparse to absent, except on logs and tree bases above the high-water line.

Dynamics:  No Data Available

Environmental Description:  This swamp forest occurs in backswamps, watercourses, flats and depressions that are flooded for significant portions of the growing season. These areas receive some nutrient inputs from adjacent uplands or overland flooding and have soils that are moderately calcareous. The substrate is deep muck with a pronounced hummock-and-hollow microtopography.

Geographic Range: This red maple - green ash swamp community occurs in the Coastal Plain of the Chesapeake Bay region and rarely in the adjacent Piedmont from New Jersey to North Carolina.

Nations: US

States/Provinces:  DC, DE, MD, NJ, VA




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G3G4

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Acer rubrum - Fraxinus pennsylvanica / Saururus cernuus Forest (Thomson et al. 1999)
= Fraxinus pennsylvanica - Acer rubrum / Cinna arundinacea - Saururus cernuus - Boehmeria cylindrica Forest (Fleming and Patterson 2003)
= Fraxinus pennsylvanica / Asimina triloba - Lindera benzoin - Ilex (decidua, verticillata) / Triadenum walteri - Saururus cernuus Forest (Walton et al. 2001)
= Fraxinus pennsylvanica / Boehmeria cylindrica - Saururus cernuus Forest (Fleming 2002a)
= Fraxinus pennsylvanica / Cinna arundinacea - Poa trivialis Semipermanently Flooded Forest (McCoy and Fleming 2000)
= Red Maple - Green Ash - Lizard''s Tail Swamp (CML2) (Windisch 2014a)

Concept Author(s): D. Thomson, J. Meininger, and L.A. Sneddon

Author of Description: D. Thomson, J. Meininger, L.A. Sneddon, G.P. Fleming

Acknowledgements: No Data Available

Version Date: 08-07-07

  • Breden, T. F., Y. R. Alger, K. S. Walz, and A. G. Windisch. 2001. Classification of vegetation communities of New Jersey: Second iteration. Association for Biodiversity Information and New Jersey Natural Heritage Program, Office of Natural Lands Management, Division of Parks and Forestry, New Jersey Department of Environmental Protection, Trenton.
  • Coxe, R. 2009. Guide to Delaware vegetation communities. Spring 2009 edition. State of Delaware, Division of Fish and Wildlife, Delaware Natural Heritage Program, Smyrna.
  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Fleming, G. P. 2001a. Community types of Coastal Plain calcareous ravines in Virginia. Preliminary analysis and classification. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond, VA. 4 pp.
  • Fleming, G. P. 2002a. Ecological communities of the Bull Run Mountains, Virginia: Baseline vegetation and floristic data for conservation planning and natural area stewardship. Natural Heritage Technical Report 02-12. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. 274 pp. plus appendices.
  • Fleming, G. P. 2002b. Preliminary classification of Piedmont & Inner Coastal Plain vegetation types in Virginia. Natural Heritage Technical Report 02-14. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. 29 pp.
  • Fleming, G. P., K. D. Patterson, and K. Taverna. 2017. The natural communities of Virginia: A classification of ecological community groups and community types. Third approximation. Version 3.0. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond, VA. [http://www.dcr.virginia.gov/natural-heritage/natural-communities/]
  • Fleming, G. P., K. Taverna, and P. P. Coulling. 2007b. Vegetation classification for the National Capitol Region parks, eastern region. Regional (VA-MD-DC) analysis prepared for NatureServe and USGS-NPS Vegetation Mapping Program, March 2007. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond.
  • Fleming, G. P., and K. D. Patterson. 2003. Preliminary vegetation classification for the National Capitol Region parks. Regional (VA-WVA-MD-DC) analysis prepared for NatureServe and USGS-NPS Vegetation Mapping Program, March 2003. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond.
  • Fleming, G. P., and K. D. Patterson. 2011b. Analysis of Coastal Plain / Outer Piedmont bottomlands and non-alluvial wetlands in Virginia, 400 plots. In-house analysis, January 2011. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond.
  • Fleming, G. P., and W. H. Moorhead, III. 1998. Comparative wetlands ecology study of the Great Dismal Swamp, Northwest River, and North Landing River in Virginia. Natural Heritage Technical Report 98-9. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. Unpublished report submitted to the U.S. Environmental Protection Agency. 181 pp. plus appendices.
  • Harrison, J. W. 2011. The natural communities of Maryland: 2011 working list of ecological community groups and community types. Unpublished report. Maryland Department of Natural Resources, Wildlife and Heritage Service, Natural Heritage Program, Annapolis. 33 pp.
  • Harrison, J. W., and P. Stango, III. 2003. Shrubland tidal wetland communities of Maryland''s Eastern Shore: Identification, assessment and monitoring. Maryland Natural Heritage Program, Maryland Department of Natural Resources, Annapolis. 118 pp.
  • Harrison, J. W., compiler. 2004. Classification of vegetation communities of Maryland: First iteration. A subset of the International Classification of Ecological Communities: Terrestrial Vegetation of the United States, NatureServe. Maryland Natural Heritage Program, Maryland Department of Natural Resources, Annapolis. 243 pp.
  • McCoy, K. M., and G. P. Fleming. 2000. Ecological communities of U.S. Army Garrison, Fort Belvoir, Fort Belvoir, Virginia. Unpublished report submitted to the U.S. Army. Natural Heritage Technical Report 00-08. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. 156 pp. plus appendices.
  • Meininger, J. 1998. Forest communities of Zekiah Swamp Nontidal Wetland of Special State Concern. Wildlife and Heritage Division, Maryland Department of Natural Resources. Annapolis, MD.
  • Patterson, K. D. 2008c. Vegetation classification and mapping at Colonial National Historical Park, Virginia. Technical Report NPS/NER/NRTR--2008/129. National Park Service, Philadelphia, PA. 369 pp.
  • Schafale, M. P. 2012. Classification of the natural communities of North Carolina, 4th Approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.
  • Thomson, D., A. M. Gould, and M. A. Berdine. 1999. Identification and protection of reference wetland natural communities in Maryland: Potomac watershed floodplain forests. The Biodiversity Program, Maryland Department of Natural Resources, Wildlife and Heritage Division. Annapolis. 119 pp.
  • Walton, D. P., P. P. Coulling, J. Weber, A. Belden, Jr., and A. C. Chazal. 2001. A plant community classification and natural heritage inventory of the Pamunkey River floodplain. Unpublished report submitted to the U.S. Environmental Protection Agency. Natural Heritage Technical Report 01-19. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. 200 pp. plus appendices.
  • Windisch, A .G. 2014a. Pinelands ecological communities and higher level groups with crosswalk / proposed 2008 revisions to NVC. November 16, 2014 draft. New Jersey Natural Heritage Program, Trenton.