Print Report

CEGL004921 Panicum virgatum - Panicum rigidulum var. elongatum - Polygonum hydropiperoides Wet Meadow

Type Concept Sentence: No Data Available

Common (Translated Scientific) Name: Switchgrass - Redtop Panicgrass - Swamp Smartweed Wet Meadow

Colloquial Name: East Gulf Coastal Plain Blackwater Sandbar

Hierarchy Level:  Association

Type Concept: This association represents vegetation of sandbars of blackwater rivers of the Gulf Coastal Plain of Mississippi and possibly other states. These areas receive water during periods of rainfall, and become hot and dry during rainless intervals. Stands may be dominated by Panicum virgatum, Panicum rigidulum var. elongatum, and Polygonum hydropiperoides. In addition to these species, which were dominant in the examples seen, graminoids and forbs include Eupatorium serotinum, Pluchea camphorata, Diodia teres, Solidago sp. (cf. Solidago canadensis), Aeschynomene sp., Rubus trivialis, Paspalum urvillei, Sida sp., Ipomoea sp., Hypericum galioides, Lycopus virginicus, and Mikania scandens. A sparser and more open phase with lower Panicum virgatum cover contains Verbena brasiliensis, Bulbostylis stenophylla, Croton capitatus, Houstonia sp., Agalinis fasciculata, and Dichanthelium sp. Woody vines include Smilax rotundifolia and Campsis radicans. Scattered woody plants of low stature include Salix nigra and Betula nigra.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available

Floristics: Stands may be dominated by Panicum virgatum, Panicum rigidulum var. elongatum, and Polygonum hydropiperoides. In addition to these species, which were dominant in the examples seen, graminoids and forbs include Eupatorium serotinum, Pluchea camphorata, Diodia teres, Solidago sp. (cf. Solidago canadensis), Aeschynomene sp., Rubus trivialis, Paspalum urvillei, Sida sp., Ipomoea sp., Hypericum galioides, Lycopus virginicus, and Mikania scandens. A sparser and more open phase with lower Panicum virgatum cover contains Verbena brasiliensis, Bulbostylis stenophylla, Croton capitatus, Houstonia sp., Agalinis fasciculata, and Dichanthelium sp. Woody vines include Smilax rotundifolia and Campsis radicans. Scattered woody plants of low stature include Salix nigra and Betula nigra.

Dynamics:  These sandbar areas receive water during periods of rainfall, and become hot and dry during rainless intervals.
Environmental Description:  This vegetation occurs on sandbars of blackwater rivers of the Gulf Coastal Plain of Mississippi and possibly other states.
Geographic Range: This type occurs on sandbars of blackwater rivers of the Coastal Plain of Mississippi and possibly other states.

Nations: US

States/Provinces:  AL?, FL?, GA?, LA?, MS


Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available
Grank: G3?

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.a Pickerelweed - Maidencane River & Basin Freshwater Marsh & Wet Meadow Group G188 2.C.4.Ne.2.a
Alliance A3405 Redtop Panicgrass - Swamp Smartweed - Dotted Smartweed Southeastern Sandbar Alliance A3405 2.C.4.Ne.2.a
Association CEGL004921 Switchgrass - Redtop Panicgrass - Swamp Smartweed Wet Meadow CEGL004921 2.C.4.Ne.2.a
Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available
Synonomy: No Data Available
Concept Author(s): M. Pyne

Author of Description: M. Pyne

Acknowledgements: No Data Available

Version Date: 09-10-12
  • GNHP [Georgia Natural Heritage Program]. 2018. Unpublished data. Georgia Natural Heritage Program, Wildlife Resources Division, Georgia Department of Natural Resources, Social Circle.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.