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Ludwigia grandiflora Ruderal Marsh
Translated Name: Large-flower Primrose-willow Ruderal Marsh
Common Name: Ruderal Large-flower Primrose-willow Marsh
Unique Identifier: CEGL004288
Classification Approach: International Vegetation Classification (IVC)
Summary: This vegetation is found in flats in the upper reaches of artificial impoundments. Stands are entirely dominated by monospecific patches of Ludwigia grandiflora (sensu lato) (= Ludwigia uruguayensis includes Ludwigia hexapetala).



Classification

Classification Confidence: Low - Poorly Documented
Classification Comments: This concept accommodates populations of both Ludwigia grandiflora ssp. grandiflora and Ludwigia grandiflora ssp. hexapetala. The nominal species Ludwigia grandiflora (sensu lato) has also been known as Ludwigia uruguayensis. See Weakley (2005) for more information. The current nomenclatural standard (Kartesz 1999) does not recognize the two subspecies and treats the entire complex simply as Ludwigia grandiflora.

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.4 - Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland
Division 2.C.4.Nd - Eastern North American Temperate & Boreal Freshwater Marsh, Wet Meadow & Shrubland
Macrogroup Eastern-Southeastern North American Ruderal Marsh, Wet Meadow & Shrubland
Group Southeastern Ruderal Marsh, Wet Meadow & Shrubland
Alliance Southern Ruderal Emergent Broadleaf Marsh

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.

Similar Associations
Unique Identifier Name
CEGL006468 Ludwigia leptocarpa Wet Meadow



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Alabama Ludwigia grandiflora Ruderal Herbaceous Vegetation Equivalent Certain Schotz pers. comm.



Ecological Systems Placement

NatureServe Conservation Status
Global Status: GNA (18Feb2002)
Rounded Global Status: GNA - Not Applicable
Reasons: This vegetation is currently known from the Piedmont of Georgia and North Carolina, the Piedmont and Atlantic Coastal Plain of South Carolina, and from Kentucky. It could occur in the Upper East Gulf Coastal Plain. It could at least potentially occur throughout the southeastern United States, particularly in artificial impoundments.

Distribution
Color legend for Distribution Map
United States Distribution: ALpotentially occurs, GA, KY, MSpotentially occurs, NC, SC
Global Distribution: United States
Global Range: This exotic vegetation is at least potentially found throughout the southeastern United States, particularly in artificial impoundments.

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Subtropical Division
Province Name: Southeastern Mixed Forest Province
Province Code: 231 Occurrence Status: Confident or certain
Section Name: Southern Appalachian Piedmont Section
Section Code: 231A Occurrence Status: Confident or certain
Province Name: Outer Coastal Plain Mixed Forest Province
Province Code: 232 Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: This vegetation consists of monospecific stands of Ludwigia grandiflora (sensu lato) (= Ludwigia uruguayensis includes Ludwigia hexapetala), an exotic, emergent, aquatic, herbaceous forb.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Ludwigia grandiflora GNA Aquatic herb Floating aquatic
 
 


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This vegetation occurs in shallow water on the flat to gently sloping margins of the upper reaches of artificial impoundments.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): A.S. Weakley
Element Description Edition Date: 01Sep1994
Element Description Author(s): A.S. Weakley
NatureServe Conservation Status Factors Edition Date: 18Feb2002
NatureServe Conservation Status Factors Author(s): M. Pyne

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • Aulbach-Smith, C. Personal communication. Botanical Services of SC.

  • Kartesz, J. T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: J. T. Kartesz and C. A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, NC.

  • Schotz, Al. Personal communication. Community Ecologist. Alabama Natural Heritage Program. Huntingdon College, Massey Hall, 1500 East Fairview Avenue, Montgomery, AL 36106-2148.

  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.

  • Weakley, A. S. 2005. Flora of the Carolinas, Virginia and Georgia. Unpublished working draft of 2005. UNC Herbarium / North Carolina Botanical Garden, University of North Carolina, Chapel Hill, NC.


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