Print Report
CEGL004986 Pontederia cordata - Sagittaria graminea - Sagittaria latifolia Marsh
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Pickerelweed - Grassy Arrowhead - Broadleaf Arrowhead Marsh
Colloquial Name: Highland Rim Pond (Pickerelweed - Arrowhead Type)
Hierarchy Level: Association
Type Concept: This association represents the vegetation of the deepest zones of open depression ponds of the Highland Rim of southeastern middle Tennessee (Interior Low Plateau, Eastern Karst Plain Subsection). This zone, dominated by Pontederia cordata, also contains Sagittaria graminea, Sagittaria latifolia, Juncus repens, Ludwigia linearis, Xyris laxifolia var. iridifolia, and Proserpinaca palustris. Scattered Cephalanthus occidentalis may also be present.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: DeSelm (1973) reports that 30 cm of water was standing in the deepest portion of Goose Pond (Arnold Air Force Base, Coffee County, Tennessee) in July 1973; this suggests that this zone may be permanently flooded except in years of drought. This vegetation may occur in proximity to, or as part of a mosaic with, vegetation of ~Panicum hemitomon Pondshore Marsh Alliance (A1379)$$, ~Cephalanthus occidentalis Central Interior Pond Shrubland Alliance (A3473)$$, or ~Rhynchospora careyana - Rhynchospora inundata Pondshore Marsh Alliance (A1383)$$. The relationships among these should be further explored.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This deepest zone of open depression ponds of the Highland Rim of southeastern middle Tennessee is dominated by Pontederia cordata and also contains Sagittaria graminea, Sagittaria latifolia, Juncus repens, Ludwigia linearis, Xyris laxifolia var. iridifolia, and Proserpinaca palustris. Scattered Cephalanthus occidentalis may also be present.
Dynamics: DeSelm (1973) reports that 30 cm of water was standing in the deepest portion of Goose Pond (Arnold Air Force Base, Coffee County, Tennessee) in July 1973; this suggests that this zone may be permanently flooded except in years of drought.
Environmental Description: This vegetation is found in the deepest zone of open depression ponds of the Highland Rim of southeastern middle Tennessee (Interior Low Plateau, Eastern Karst Plain Subsection). It is characteristic of portions of Goose Pond in Coffee County, Tennessee (on Arnold Air Force Base).
Geographic Range: A more complete inventory of ponds within the range of Pontederia cordata in the southeastern Highland Rim is needed to determine the validity and rarity of this type. The Barrens of the southeastern Highland Rim of Tennessee comprise about 500 square miles (over 300,000 ha).
Nations: US
States/Provinces: TN
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686387
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G1G2Q
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.Nd Eastern North American Temperate Freshwater Marsh, Wet Meadow & Shrubland Division | D323 | 2.C.4.Nd |
| Macrogroup | 2.C.4.Nd.2 Broadleaf Cattail - White Snakeroot - Rush species Marsh, Wet Meadow & Shrubland Macrogroup | M069 | 2.C.4.Nd.2 |
| Group | 2.C.4.Nd.2.a Bulrush species - Cattail species Freshwater Marsh Group | G125 | 2.C.4.Nd.2.a |
| Alliance | A3669 Green Arrow-arum - Pickerelweed - Arrowhead species Marsh Alliance | A3669 | 2.C.4.Nd.2.a |
| Association | CEGL004986 Pickerelweed - Grassy Arrowhead - Broadleaf Arrowhead Marsh | CEGL004986 | 2.C.4.Nd.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pontederia cordata - Sagittaria graminea - Sagittaria latifolia Semipermanently Flooded Herbaceous Vegetation (TNC 1998a)
> Marsh (Saggitaria [sic] zone) (DeSelm 1973)
> Marsh (Saggitaria [sic] zone) (DeSelm 1973)
- DeSelm, H. R. 1973. Six potential National Natural Landmarks in Tennessee. Report prepared for the USDI National Park Service, Southeast Region, Atlanta, GA. NPS--CS5000 31582, University of Tennessee, Knoxville.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
- TDNH [Tennessee Division of Natural Heritage]. 2018. Unpublished data. Tennessee Division of Natural Heritage, Nashville, TN.
- TNC [The Nature Conservancy]. 1998a. An investigation and assessment of the vegetation of Arnold Air Force Base. Coffee and Franklin counties, Tennessee. The Nature Conservancy, Tennessee Field Office, Nashville. 37 pp. plus appendices.