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Cyrilla racemiflora / Xyris fimbriata - Utricularia purpurea - Lycopodiella alopecuroides Wet Scrub
Translated Name: Swamp Titi / Giant Yellow-eyed-grass - Eastern Purple Bladderwort - Foxtail Clubmoss Wet Scrub
Common Name: Titi Pond
Unique Identifier: CEGL007829
Classification Approach: International Vegetation Classification (IVC)
Summary: This shrubland community occurs in seasonally flooded natural depression ponds in the Outer Coastal Plain of South Carolina, occurring in a pine flatwood landscape. Cyrilla racemiflora is the only shrub present through most of the ponds and covers as much as 70% of the pond's area. Scattered, stunted Nyssa biflora may also occur. Prior to seasonal drawdown, these ponds are flooded 6-9 dm deep, and aquatics such as Utricularia purpurea and emergent herbs such as Xyris fimbriata characterize the herbaceous stratum. Following drawdown, the exposed pond bottom may have species such as Lycopodiella alopecuroides, Carex spp., and Juncus sp. Steep rims of the ponds are rimmed with Chamaedaphne calyculata, Gordonia lasianthus, Lyonia lucida, and Smilax laurifolia. These ponds are known from the vicinity of Lewis Ocean Bay Preserve, Horry County, South Carolina.



Classification

Classification Confidence: Low

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.2 - Temperate to Polar Bog & Fen
Division 2.C.2.Nb - Atlantic & Gulf Coastal Plain Pocosin
Macrogroup Southeastern Coastal Bog & Fen
Group Southeastern Coastal Pocosin & Shrub Bog
Alliance Swamp Titi Wet Shrubland

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



Related Concepts from Other Classifications


Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES203.262 Southern Atlantic Coastal Plain Depression Pond


NatureServe Conservation Status
Global Status: G2? (27Mar2003)
Rounded Global Status: G2 - Imperiled
Reasons: This community appears to be rare and restricted to a small geographic area, the pine flatwood landscape of the Outer Coastal Plain of South Carolina (and possibly other coastal states to the south). There is some potential for its occurrence in other parts of the southeastern Coastal Plain, but it is unlikely to be common anywhere. Like other depression pond communities, it is vulnerable to hydrologic alteration, including ditching and draining, and also to regional lowering of water table by pumping of shallow aquifers. This community occurs in a fire-maintained matrix, and fire exclusion has impacts on the its floristic composition.

Distribution
Color legend for Distribution Map
United States Distribution: FLpotentially occurs, GApotentially occurs, SC
Global Distribution: United States
Global Range: This shrubland community occurs in seasonally flooded natural depression ponds in the Outer Coastal Plain of South Carolina and possibly other coastal states to the south.

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Subtropical Division
Province Name: Outer Coastal Plain Mixed Forest Province
Province Code: 232 Occurrence Status: Confident or certain
Section Name: Atlantic Coastal Flatwoods Section
Section Code: 232C Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: Cyrilla racemiflora is the only shrub present through most of the ponds and covers as much as 70% of the pond's area. Scattered, stunted Nyssa biflora may also occur. Prior to seasonal drawdown, these ponds are flooded 6-9 dm deep, and aquatics such as Utricularia purpurea and emergent herbs such as Xyris fimbriata characterize the herbaceous stratum. Following drawdown, the exposed pond bottom may have species such as Lycopodiella alopecuroides, Carex spp., and Juncus sp. Steep rims of the ponds are rimmed with Chamaedaphne calyculata, Gordonia lasianthus, Lyonia lucida, and Smilax laurifolia.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Cyrilla racemiflora G2 Broad-leaved evergreen shrub Tall shrub/sapling  
 
 
Xyris fimbriata G2 Flowering forb Herb (field)    
 
 
Lycopodiella alopecuroides G2 Fern (Spore-bearing forb) Herb (field)    
 
 
Utricularia purpurea G2 Aquatic herb Submerged aquatic    
 
 


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This shrubland community occurs in seasonally flooded natural depression ponds in the Outer Coastal Plain of South Carolina, occurring in a pine flatwood landscape.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): C. Smith and A.S. Weakley
Element Description Edition Date: 08Dec1998
Element Description Author(s): C. Smith and A.S. Weakley
NatureServe Conservation Status Factors Edition Date: 27Mar2003
NatureServe Conservation Status Factors Author(s): A.S. Weakley

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


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


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