Print Report

CEGL004511 Spartina bakeri - Muhlenbergia filipes - Andropogon glomeratus - Rhynchospora colorata Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Sand Cordgrass - Gulf Hairawn Muhly - Bushy Bluestem - Star-rush Whitetop Marsh

Colloquial Name: Sand Cordgrass Interdune Swale

Hierarchy Level:  Association

Type Concept: These seasonally flooded coastal interdunal swales and related depressions occur in Florida and possibly southeastern Georgia, and are dominated by Spartina bakeri, or at least with substantial cover of it. Muhlenbergia filipes may be codominant; Andropogon glomeratus and Aristida sp. are occasionally present. A variety of wetland herbs are present in the wetter swales, including Rhynchospora colorata, Sagittaria lancifolia, Eupatorium mikanioides (a Florida endemic), Setaria magna, Cladium mariscus ssp. jamaicense, Phyla nodiflora, Sabatia stellaris, and Pluchea rosea. Nostoc, a cyanobacterium, forms a wet, slippery, dark green ground cover during wet periods and a thick, black crust during dry spells. An alga, Chara sp., is also present in pools in wet swales. Exotic species found in some swales include Schinus terebinthifolius and Catharanthus roseus.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: These areas are not tidally flooded but are apparently maintained as marsh by occasional flooding by brackish water during severe storm tides (in hurricane events). These storm flooding events maintain brackish soil conditions. Exotic species found in some swales include Schinus terebinthifolius and Catharanthus roseus.

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

Physiognomy and Structure: No Data Available

Floristics: Stands of this type are dominated by Spartina bakeri, or at least with substantial cover of it. Muhlenbergia filipes may be codominant; Andropogon glomeratus and Aristida sp. are occasionally present. A variety of wetland herbs are present in the wetter swales, including Rhynchospora colorata, Sagittaria lancifolia, Eupatorium mikanioides (a Florida endemic), Setaria magna, Cladium mariscus ssp. jamaicense, Phyla nodiflora, Sabatia stellaris, and Pluchea rosea. Nostoc, a cyanobacterium, forms a wet, slippery, dark green ground cover during wet periods and a thick, black crust during dry spells. An alga, Chara sp., is also present in pools in wet swales. Exotic species found in some swales include Schinus terebinthifolius and Catharanthus roseus. A stand assigned here in the Ocala National Forest (Farles Prairie) is strongly dominated by Spartina bakeri, with Ludwigia suffruticosa, Amphicarpum muehlenbergianum, Dichanthelium sp., Smilax pumila, Centella erecta, Rhexia mariana, Pluchea rosea, Andropogon brachystachyus, Andropogon capillipes, and Ludwigia repens. The shrubs Vaccinium darrowii and Hypericum myrtifolium are present here at low cover values. In fire-suppressed examples, there may be a very sparse tree layer (5-10 m tall) of Pinus elliottii, Pinus taeda, and Salix caroliniana. There may also be a sparse shrub layer (1-2 m) of these same species, as well as Diospyros virginiana and Sabal palmetto.

Dynamics:  These areas are not tidally flooded but are apparently maintained as marsh by occasional flooding by brackish water during severe storm tides (in hurricane events). These storm flooding events maintain brackish soil conditions.

Environmental Description:  These are seasonally flooded coastal interdunal swales in Florida and possibly southeastern Georgia.

Geographic Range: This association is found in Florida and possibly southeastern Georgia.

Nations: US

States/Provinces:  FL, GA?




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Interdune Grass-Sedge Meadow Community (Hillestad et al. 1975)

Concept Author(s): L. Chafin and A.S. Weakley

Author of Description: M. Pyne

Acknowledgements: No Data Available

Version Date: 01-04-08

  • FNAI [Florida Natural Areas Inventory]. 2010a. Guide to the natural communities of Florida: 2010 edition. Florida Natural Areas Inventory, Tallahassee, FL. 228 pp. [https://fnai.org/naturalcommguide.cfm]
  • Hillestad, H. O., J. R. Bozeman, A. S. Johnson, C. W. Berisford, and J. I. Richardson. 1975. The ecology of the Cumberland Island National Seashore, Camden County, Georgia. Technical Report Series No. 75-5. Georgia Marine Sciences Center, Skidway Island, GA.
  • 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.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.