Print Report

CEGL004178 Cladium mariscus Tidal Salt Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Swamp Sawgrass Tidal Salt Marsh

Colloquial Name: Tidal Sawgrass Salt Marsh

Hierarchy Level:  Association

Type Concept: This association is a brackish marsh of the northern Gulf of Mexico and Atlantic Coast. Examples are dominated by Cladium mariscus ssp. jamaicense in often dense stands. Additional species may include Juncus roemerianus, Osmunda regalis, Polygonum hydropiperoides, Spartina alterniflora, Spartina bakeri, Typha domingensis, Amaranthus australis, Amaranthus cannabinus, Hibiscus sp., Solidago sempervirens var. mexicana, and Woodwardia virginica, among others. In addition, there may be a sparse tree layer (10-15 m tall) of Acer rubrum, Juniperus virginiana var. silicicola, and Sabal palmetto. There may also be a very sparse to moderate shrub layer (2-5 m) of Acer rubrum, Baccharis angustifolia, Morella cerifera, and Salix caroliniana, among others. In addition, the noxious exotic Triadica sebifera could be present.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type is found in tidal rivers of southern and central North Carolina, as well as in wind-tidal (microtidal) embayed region. It was reported that this type is not known to occur on the Atlantic Coast of Florida (A. Johnson pers. comm.). However, in a more recent communication with Ann Johnson, she determined that she was mistaken and that brackish sawgrass marshes do occur along the Atlantic Coast of Florida. In southeastern Virginia this species is found as a component of wind-tidal marshes and does not typically dominate.

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

Physiognomy and Structure: No Data Available

Floristics: Stands are typically dominated by a very dense herbaceous layer of Cladium mariscus ssp. jamaicense. Additional species may include Juncus roemerianus, Osmunda regalis, Polygonum hydropiperoides, Spartina alterniflora, Spartina bakeri, Typha domingensis, Amaranthus australis, Amaranthus cannabinus, Hibiscus sp., Solidago sempervirens var. mexicana, and Woodwardia virginica, among others. In addition, there may be a sparse tree layer (10-15 m tall) of Acer rubrum, Juniperus virginiana var. silicicola, and Sabal palmetto. There may also be a very sparse to moderate shrub layer (2-5 m) of Acer rubrum, Baccharis angustifolia, Morella cerifera, and Salix caroliniana, among others. In addition, the noxious exotic Triadica sebifera could be present.

Dynamics:  No Data Available

Environmental Description:  In Florida this association occurs along the Gulf of Mexico and the Atlantic Coast in tidally influenced, upper reaches of river mouths where estuarine (salt) marshes blend with freshwater marshes (FNAI 1990). At this juncture, salinity levels are greatly diminished, allowing Cladium mariscus ssp. jamaicense (which is relatively salt intolerant) to form dense stands.

Geographic Range: This brackish marsh occurs along the northern Gulf of Mexico and southern Atlantic Coast, ranging from Louisiana to Florida and north to North Carolina.

Nations: US

States/Provinces:  AL, FL, GA, LA, MS, NC, SC




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G4?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Cladium mariscus ssp. jamaicense Tidal Herbaceous Vegetation (McManamay 2017b)

Concept Author(s): A.S. Weakley

Author of Description: A.S. Weakley

Acknowledgements: No Data Available

Version Date: 01-02-13

  • GNHP [Georgia Natural Heritage Program]. 2018. Unpublished data. Georgia Natural Heritage Program, Wildlife Resources Division, Georgia Department of Natural Resources, Social Circle.
  • Johnson, Ann F. Personal communication. Florida Natural Areas Inventory, Tallahassee.
  • LNHP [Louisiana Natural Heritage Program]. 2009. Natural communities of Louisiana. Louisiana Natural Heritage Program, Louisiana Department of Wildlife & Fisheries, Baton Rouge. 46 pp. [http://www.wlf.louisiana.gov/sites/default/files/pdf/page_wildlife/6776-Rare%20Natural%20Communities/LA_NAT_COM.pdf]
  • MSNHP [Mississippi Natural Heritage Program]. 2006. Ecological communities of Mississippi. Museum of Natural Science, Mississippi Department of Wildlife, Fisheries, and Parks, Jackson, MS. 9 pp.
  • McManamay, R. H. 2017a. Vegetation mapping at Cumberland Island National Seashore. Natural Resource Report NPS/SECN/NRR--2017/1511. National Park Service, Fort Collins, CO. 422 pp.
  • McManamay, R. H. 2017b. Vegetation mapping at Cape Lookout National Seashore. Natural Resource Report NPS/SECN/NRR--2017/1561. National Park Service, Fort Collins, CO. 264 pp.
  • Nelson, J. B. 1986. The natural communities of South Carolina: Initial classification and description. South Carolina Wildlife and Marine Resources Department, Division of Wildlife and Freshwater Fisheries, Columbia, SC. 55 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.
  • Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina. Third approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh. 325 pp.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.