Print Report

CEGL006350 Bacopa monnieri - Eleocharis albida Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Herb-of-Grace - White Spikerush Marsh

Colloquial Name: Herb-of-Grace - Spikerush Interdunal Swale

Hierarchy Level:  Association

Type Concept: This association comprises vegetation in broad, flat, seasonally flooded ponds within maritime dunes, and is known only from Virginia. It occurs in natural settings at Chincoteague National Wildlife Refuge, but has also been observed at impoundments of Back Bay National Wildlife Refuge. Vegetation is often dominated by floating aquatic species, especially Bacopa monnieri. Common associates include Eleocharis albida, Stuckenia pectinata, Pluchea odorata, Schoenoplectus pungens, Hydrocotyle umbellata, Hydrocotyle verticillata, Phyla lanceolata, and Cyperus odoratus. Algae may occur in abundance. Species diversity is low. Standing water may be present during much of the year. Soils are generally a shallow organic layer over wet sand. These interdunal ponds generally occur only in large dune systems.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Clarification of interdunal pond vegetation classification will require further data collection and analysis.

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

Physiognomy and Structure: No Data Available

Floristics: Vegetation is often dominated by floating aquatic species, especially Bacopa monnieri. Common associates include Eleocharis albida, Stuckenia pectinata (= Potamogeton pectinatus), Pluchea odorata, Schoenoplectus pungens (= Scirpus pungens), Hydrocotyle umbellata, Hydrocotyle verticillata, Phyla lanceolata, and Cyperus odoratus. Algae may occur in abundance.

Dynamics:  Species composition of interdunal ponds varies with geography, topographic position, salinity from overwash or salt spray, hydroperiod, and soil properties (Fleming 2001).

Environmental Description:  This association occurs in seasonally flooded to semipermanently flooded oligohaline ponds within maritime dunes. Standing water may be present during much of the year. Soils are generally a shallow organic layer over wet sand. These interdunal ponds generally occur only in large dune systems, but are also known from artificial impoundments as well.

Geographic Range: This association is currently described from Virginia but possibly occurs in North Carolina and southward.

Nations: US

States/Provinces:  VA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G1Q

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): Eastern Ecology Group

Author of Description: S.L. Neid

Acknowledgements: No Data Available

Version Date: 09-06-13

  • 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., 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/]
  • TNC [The Nature Conservancy]. 1997a. Vegetation classification of Assateague Island National Seashore and Chincoteague National Wildlife Refuge. Report to the NBS/NPS Vegetation Mapping Program. The Nature Conservancy. Eastern Regional Office, Boston, MA.