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CEGL008478 Panicum hemitomon - Ludwigia sphaerocarpa Marsh
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Maidencane - Globe-fruit Primrose-willow Marsh
Colloquial Name: West Gulf Coastal Plain Quaternary Sand Ridge Flatwoods Pond
Hierarchy Level: Association
Type Concept: This association represents Quaternary Sand Ridge flatwoods ponds of the West Gulf Coastal Plain. This type is known only from Hardin and Newton counties, Texas. These ponds exhibit an extremely fluctuating water table with floating peat mats present. They are graminoid-dominated, generally with a layer of tall wetland grasses and sedges above a layer of semi-aquatic herbs. They tend to lack woody plant species, but may contain scattered, stunted Nyssa biflora and stems of Morella cerifera. Most species typically found in related flatwoods ponds of the region are absent from this type. Ludwigia sphaerocarpa and Panicum hemitomon are apparently the common and/or characteristic species of this type. Also present are Eriocaulon compressum, Xyris fimbriata, Carex glaucescens, Carex verrucosa, Bacopa caroliniana, Sphagnum macrophyllum, Proserpinaca pectinata, Gratiola brevifolia, Juncus repens, Rhynchospora cephalantha, and Centella erecta. Eleocharis elongata and Schoenoplectus etuberculatus are not found outside this association in the West Gulf Coastal Plain.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Examples are conserved at Sandyland Preserve in eastern Texas.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: These ponds are graminoid-dominated, generally with a layer of tall wetland grasses and sedges above a layer of semi-aquatic herbs. They tend to lack woody plant species, but may contain scattered, stunted Nyssa biflora and stems of Morella cerifera (= Myrica cerifera). Bridges and Orzell (1989a) reported that most species typically found in related flatwoods ponds of the region are absent from this type. Ludwigia sphaerocarpa and Panicum hemitomon are apparently the common and/or characteristic species of this type. Also present are Eriocaulon compressum, Xyris fimbriata, Carex glaucescens, Carex verrucosa, Bacopa caroliniana, Sphagnum macrophyllum, Proserpinaca pectinata, Gratiola brevifolia, Juncus repens, Rhynchospora cephalantha, and Centella erecta. Eleocharis elongata and Schoenoplectus etuberculatus (= Scirpus etuberculatus) are not found outside this association in the West Gulf Coastal Plain (Bridges and Orzell 1989a).
Dynamics: No Data Available
Environmental Description: These ponds occur as inclusions of slowly permeable soils within dry upland longleaf pine woodland on deep sandy soils. Local runoff and rainfall collect in these depressions resulting in higher water tables.
Geographic Range: This type is known only from Hardin and Newton counties, Texas.
Nations: US
States/Provinces: TX
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686012
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G1
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation | F013 | 2.C.4 |
| Division | 2.C.4.Ne Atlantic & Gulf Coastal Marsh, Wet Meadow & Shrubland Division | D322 | 2.C.4.Ne |
| Macrogroup | 2.C.4.Ne.2 Beaksedge species - Spikerush species - Panicgrass species Atlantic & Gulf Coastal Plain Wet Prairie & Marsh Macrogroup | M067 | 2.C.4.Ne.2 |
| Group | 2.C.4.Ne.2.g Beaksedge species - Spikerush species - Yellow-eyed-grass species Pondshore & Wet Prairie Group | G915 | 2.C.4.Ne.2.g |
| Alliance | A1379 Maidencane Pondshore Marsh Alliance | A1379 | 2.C.4.Ne.2.g |
| Association | CEGL008478 Maidencane - Globe-fruit Primrose-willow Marsh | CEGL008478 | 2.C.4.Ne.2.g |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Quaternary Sand Ridge Flatwoods Pond (Bridges and Orzell 1989a)
- Bridges, E. L., and S. L. Orzell. 1989a. Longleaf pine communities of the West Gulf Coastal Plain. Natural Areas Journal 9:246-263.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.