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CEGL004126 Panicum hemitomon - Dulichium arundinaceum Marsh
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Maidencane - Threeway Sedge Marsh
Colloquial Name: Interior Highland Maidencane Pond
Hierarchy Level: Association
Type Concept: This association includes emergent zones of Eastern Highland Rim ponds in southeastern middle Tennessee (Coffee and some adjoining counties) dominated by Panicum hemitomon. Ponds dominated by maidencane are rare in this region as the species is primarily found in the Coastal Plain. This community is typically found in small, open, wet depressions in upland flats, sometimes associated with headwaters of creeks. It may form a mosaic with other upland pond vegetation, for example, ~Cephalanthus occidentalis / Hibiscus moscheutos Wet Shrubland (CEGL004742)$$ or vegetation of ~Carex spp. - Calamagrostis canadensis Wet Meadow Alliance (A4107)$$. Panicum hemitomon is the dominant species. Small scattered trees and shrubs may be present, such as Cephalanthus occidentalis, Quercus phellos, Liquidambar styraciflua, and Hibiscus moscheutos. Associated herbs include Polygonum hydropiperoides, Saccharum baldwinii, Dulichium arundinaceum, Proserpinaca pectinata, Carex bullata, Carex gigantea, Juncus repens, Leersia hexandra, Dichanthelium longiligulatum, and Typha latifolia. Several other disjunct Coastal Plain species occur at known examples (for example Xyris laxifolia var. iridifolia, Lachnanthes caroliana).
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: In addition to an example at Goose Pond, Arnold Air Force Base, Coffee County, Tennessee (DeSelm 1973), other examples of this community on Arnold Air Force Base occur at Clay Pond, Lemm Pond, and Heron Pond. This association is apparently restricted to the Eastern Highland Rim of Coffee County and adjacent Grundy County, in Tennessee. Ponds dominated by maidencane are rare in this region as the species is primarily found in the Coastal Plain.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association is dominated by Panicum hemitomon. Small scattered trees and shrubs may be present, such as Cephalanthus occidentalis, Quercus phellos, Liquidambar styraciflua, and Hibiscus moscheutos. Associated herbs include Polygonum hydropiperoides, Saccharum baldwinii, Dulichium arundinaceum, Proserpinaca pectinata, Carex bullata, Carex gigantea, Juncus repens, Leersia hexandra, Dichanthelium longiligulatum, and Typha latifolia. Several other disjunct Coastal Plain species occur at known examples (for example Xyris laxifolia var. iridifolia, Lachnanthes caroliana). An example at Goose Pond, Arnold Air Force Base, Coffee County, Tennessee (DeSelm 1973), is part of a mosaic which includes vegetation variously dominated by Dulichium arundinaceum, Pontederia cordata, Eleocharis spp. (Eleocharis quadrangulata?, Eleocharis microcarpa?), Sagittaria latifolia, and Sagittaria graminea. The Panicum hemitomon-dominated community was described as having a wetter phase and a drier phase. The wetter phase includes Leersia hexandra, Proserpinaca palustris?, Eleocharis quadrangulata?, Cephalanthus occidentalis, Sagittaria latifolia, Decodon verticillatus, Dulichium arundinaceum, Ludwigia linearis, Dichanthelium dichotomum var. dichotomum (= Panicum microcarpon), Pontederia cordata, Juncus repens, and Juncus canadensis. The drier phase contains most of the above species as well as Acer rubrum var. trilobum, Carex sp., Saccharum giganteum, Hypericum adpressum (not seen in many years), Iris prismatica, Liquidambar styraciflua, Rhexia virginica, and Xyris sp. (Xyris laxifolia var. iridifolia?). In addition, vegetation surrounding this phase is described by DeSelm (1973) as including Carex cf. lurida, Decodon verticillatus, Saccharum giganteum, Iris prismatica, Juncus canadensis, Dichanthelium dichotomum, and Rhexia virginica. No attempt has been made to place this latter vegetation into the classification; further investigation is required.
Dynamics: No Data Available
Environmental Description: This association includes emergent zones of Eastern Highland Rim ponds in southeastern middle Tennessee (Coffee and some adjoining counties). It is typically found in small, open, wet depressions in upland flats, sometimes associated with headwaters of creeks. It may form a mosaic with other upland pond vegetation.
Geographic Range: This association is apparently restricted to the Eastern Highland Rim of Coffee County and adjacent Grundy County, in Tennessee.
Nations: US
States/Provinces: TN
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686699
Confidence Level: Low - Poorly Documented
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 | CEGL004126 Maidencane - Threeway Sedge Marsh | CEGL004126 | 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: No Data Available
- 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.