Print Report

CEGL008477 Nyssa biflora - Liquidambar styraciflua / Magnolia virginiana / Hamamelis virginiana - Viburnum nudum Swamp Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Swamp Tupelo - Sweetgum / Sweetbay / American Witch-hazel - Possumhaw Swamp Forest

Colloquial Name: Southern Upper East Gulf Coastal Plain Seepage Forest

Hierarchy Level:  Association

Type Concept: These saturated forests occur in seepage-influenced areas adjacent to small streams in southern portions of the Upper East Gulf Coastal Plain of Alabama and possibly Mississippi. The open tree canopy is typically dominated by Nyssa biflora, with some combination of Liquidambar styraciflua and Acer rubrum. In addition, Pinus taeda may be present in some stands. The subcanopy (and possibly the canopy in some examples) contains substantial Magnolia virginiana; this stratum may also contain Ilex opaca var. opaca and Cornus foemina. Canopy cover in these seeps is not complete, and the shrub and herbaceous layers may be well-developed. The shrub stratum contains Ilex opaca var. opaca, Viburnum nudum var. nudum, Hamamelis virginiana, and Itea virginica, which may be dominant. Other shrubs present include Viburnum dentatum, Ilex decidua, Cornus foemina, Arundinaria tecta, and others. The herbaceous layer includes Osmunda regalis var. spectabilis, Osmunda cinnamomea, Woodwardia areolata, Solidago patula var. strictula, Sagittaria latifolia, Penthorum sedoides, Mikania scandens, Juncus effusus, Chelone glabra, Dichanthelium spp., Carex crinita, Carex frankii, Carex intumescens, Carex leptalea, Mitchella repens, Sphagnum spp., and others. Various of these herbs may be locally dominant in patches. Woody vines are common; some typical species are Smilax laurifolia, Smilax rotundifolia, Toxicodendron radicans, Berchemia scandens, and others. This association lacks some of the species characteristic of related vegetation types from further south, such as Morella caroliniensis, Toxicodendron vernix, Ilex coriacea, Clethra alnifolia, and Persea palustris.

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: The open tree canopy of stands is typically dominated by Nyssa biflora, with some combination of Liquidambar styraciflua and Acer rubrum (NatureServe Ecology unpubl. data). In addition, Pinus taeda may be present in some stands. The subcanopy (and possibly the canopy in some examples) contains substantial Magnolia virginiana; this stratum may also contain Ilex opaca var. opaca and Cornus foemina. Canopy cover in these seeps is not complete, and the shrub and herbaceous layers may be well-developed. The shrub stratum contains Ilex opaca var. opaca, Viburnum nudum var. nudum, Hamamelis virginiana, and Itea virginica, which may be dominant. Other shrubs present include Viburnum dentatum, Ilex decidua, Cornus foemina, Arundinaria tecta (= Arundinaria gigantea ssp. tecta), and others. The herbaceous layer includes Osmunda regalis var. spectabilis, Osmunda cinnamomea, Woodwardia areolata, Solidago patula var. strictula, Sagittaria latifolia, Penthorum sedoides, Mikania scandens, Juncus effusus, Chelone glabra, Dichanthelium spp., Carex crinita, Carex frankii, Carex intumescens, Carex leptalea, Mitchella repens, Sphagnum spp., and others. Various of these herbs may be locally dominant in patches. Woody vines are common; some typical species are Smilax laurifolia, Smilax rotundifolia, Toxicodendron radicans, Berchemia scandens, and others. This association lacks some of the species characteristic of related vegetation types from further south, such as Morella caroliniensis (= Myrica heterophylla), Toxicodendron vernix, Ilex coriacea, Clethra alnifolia, and Persea palustris.

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This saturated forest occurs in the southern Upper East Gulf Coastal Plain of Alabama and possibly Mississippi, and possibly the nearby Ridge and Valley/Piedmont transition area of Alabama (231Dd).

Nations: US

States/Provinces:  AL, MS




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G2G3

Greasons: No Data Available


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: 09-28-05

  • MSNHP [Mississippi Natural Heritage Program]. 2006. Ecological communities of Mississippi. Museum of Natural Science, Mississippi Department of Wildlife, Fisheries, and Parks, Jackson, MS. 9 pp.
  • NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
  • Nordman, C., M. Russo, and L. Smart. 2011. Vegetation types of the Natchez Trace Parkway, based on the U.S. National Vegetation Classification. NatureServe Central Databases (International Ecological Classification Standard: Terrestrial Ecological Classifications). Arlington, VA. Data current as of 11 April 2011. 548 pp.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.