Print Report

CEGL006843 Alnus serrulata - Salix nigra / Pilea (fontana, pumila) Tidal Shrub Swamp

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Hazel Alder - Black Willow / (Lesser Clearweed, Canadian Clearweed) Tidal Shrub Swamp

Colloquial Name: Alder - Black Willow Tidal Shrub Swamp

Hierarchy Level:  Association

Type Concept: This tidal alder - black willow shrubland of the Maryland and Virginia Coastal Plain occurs on the upper reaches of freshwater tidal rivers, forming a zone between adjacent freshwater tidal marshes and uplands. Microtopography is variable, ranging from pronounced hummocks and hollows to flat. The substrate is partially decomposed peat with sand or silt admixed. The shrub canopy is relatively open and dominated by Salix nigra, or mixed with other shrubs such as Cephalanthus occidentalis, Acer rubrum, Acer negundo, Alnus serrulata, Cornus amomum, Fraxinus pennsylvanica, Corylus americana, Ilex verticillata, Lindera benzoin, Rosa palustris, and Viburnum dentatum. Vines include Mikania scandens, Apios americana, and Toxicodendron radicans. The herbaceous layer is relatively diverse and is composed of Symphyotrichum novi-belgii, Boehmeria cylindrica, Galium obtusum, Hibiscus moscheutos, Impatiens capensis, Geum canadense, Cinna arundinacea, Leersia oryzoides, Peltandra virginica, Pilea pumila, Pilea fontana, Polygonum arifolium, Polygonum punctatum, Polygonum sagittatum, and Thalictrum pubescens.

Diagnostic Characteristics: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: The shrub canopy is relatively open and dominated by Salix nigra, or mixed with other shrubs such as Cephalanthus occidentalis, Acer rubrum, Acer negundo, Alnus serrulata, Cornus amomum, Fraxinus pennsylvanica, Corylus americana, Ilex verticillata, Lindera benzoin, Rosa palustris, and Viburnum dentatum. Vines include Mikania scandens, Apios americana, and Toxicodendron radicans. The herbaceous layer is relatively diverse and is composed of Symphyotrichum novi-belgii, Boehmeria cylindrica, Galium obtusum, Hibiscus moscheutos, Impatiens capensis, Geum canadense, Cinna arundinacea, Leersia oryzoides, Peltandra virginica, Pilea pumila, Pilea fontana, Polygonum arifolium, Polygonum punctatum, Polygonum sagittatum, and Thalictrum pubescens (= Thalictrum polygamum).

Dynamics:  No Data Available

Environmental Description:  This tidal alder - black willow shrubland of the Maryland and Virginia Coastal Plain occurs on the upper reaches of freshwater tidal rivers, forming a zone between adjacent freshwater tidal marshes and uplands. Microtopography is variable, ranging from pronounced hummocks and hollows to flat. The substrate is partially decomposed peat with sand or silt admixed.

Geographic Range: This vegetation occurs on the Coastal Plain of Virginia and Maryland.

Nations: US

States/Provinces:  MD, VA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Alnus serrulata - Salix nigra / Pilea fontana Tidal Shrubland (Coulling 2002)
= Alnus serrulata - Salix nigra / Pilea fontana Tidally Flooded Shrubland (McCoy and Fleming 2000)

Concept Author(s): J. Harrison and P. Coulling

Author of Description: L.A. Sneddon

Acknowledgements: No Data Available

Version Date: 06-01-07

  • Coulling, P. P. 2002. A preliminary classification of tidal marsh, shrub swamp, and hardwood swamp vegetation and assorted non-tidal, chiefly non-maritime, herbaceous wetland communities of the Virginia Coastal Plain. October 2002. Virginia Department of Conservation and Recreation, Division of Natural Heritage. Natural Heritage Technical Report 02-18. 30 pp.
  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • 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.
  • 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.