Print Report

CEGL007207 Fagus grandifolia - Quercus alba / Acer (floridanum, leucoderme) / Solidago auriculata Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: American Beech - White Oak / (Southern Sugar Maple, Chalk Maple) / Eared Goldenrod Forest

Colloquial Name: West Gulf Coastal Plain Beech - White Oak Forest (Subcalcareous Type)

Hierarchy Level:  Association

Type Concept: This mesic, subcalcareous forest of the West Gulf Coastal Plain of eastern Texas and western Louisiana is typically dominated by an uneven-aged canopy of Fagus grandifolia and Quercus alba. It is further characterized by a rich, vernal understory flora and the presence of a number of species which indicate both mesic and calciphilic habitats in the West Gulf Coastal Plain, such as Acer leucoderme, Acer floridanum, Cercis canadensis var. canadensis, Hamamelis virginiana, Solidago auriculata, Lithospermum tuberosum, Cynoglossum virginianum, Uvularia perfoliata, Dioscorea villosa, and Smilax pumila. This type remains incompletely documented and understood due to relatively recent recognition of the existence of Acer leucoderme in eastern Texas. Viburnum dentatum, Viburnum acerifolium, Aesculus pavia var. pavia, Ilex opaca var. opaca, Asimina triloba, Ostrya virginiana, Carpinus caroliniana ssp. caroliniana, Cornus florida, and Styrax grandifolius are also indicative of this type.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: The geographic range of Acer leucoderme is much more restricted than that of Acer floridanum (Little 1979a) and is especially limited in eastern Texas where the species is has been reported from only 5 counties (Bridges and Orzell 1989a). Bridges and Orzell (1989a) first documented the occurrence of Acer leucoderme in eastern Texas; omission of this important indicator tree from taxonomic treatments for the region (Correll and Johnston 1970, Nixon 1985) continues to hinder understanding of this community type. Restricting the concept of this type to presence of Acer leucoderme would thus create a much rarer type. Excellent characteristic examples can be found at central and northern Sabine National Forest, rarely on the northern Angelina National Forest, and Brushy Heads (western Vernon Parish, Louisiana).

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: This forest is dominated by a canopy of Fagus grandifolia and Quercus alba. Acer floridanum (= Acer barbatum) and/or Acer leucoderme are usually present in the subcanopy. Associated species may also include Fraxinus americana, Carya myristiciformis, Ulmus americana, Ulmus alata, Quercus falcata, Quercus shumardii, Tilia americana var. caroliniana, Acer rubrum, Carya texana, Diospyros virginiana, Quercus michauxii, Celtis laevigata, Ulmus rubra, Carya ovata, Gleditsia triacanthos, Liquidambar styraciflua, Nyssa sylvatica, Prunus serotina, Morus rubra, and Quercus stellata. The canopy is generally closed and heavily deciduous-dominated. Phoradendron spp., Tillandsia usneoides, and Pleopeltis polypodioides ssp. polypodioides may be present on the canopy species. The scattered to patchy shrub stratum includes regenerating canopy species and other species such as Crataegus marshallii, Crataegus spathulata, Aesculus pavia, Asimina triloba, Ostrya virginiana, Carpinus caroliniana, Cornus florida, Cercis canadensis, Viburnum dentatum, Viburnum acerifolium, and Styrax grandifolius. The sparse herbaceous layer may include species such as Polystichum acrostichoides, Scleria oligantha, Solidago auriculata, Symphyotrichum drummondii (= Aster drummondii), Helianthus hirsutus, Galium circaezans, Vicia minutiflora, Lithospermum tuberosum, Uvularia perfoliata, Cynoglossum virginianum, Arisaema triphyllum, Mitchella repens, Pedicularis canadensis, Spigelia marilandica, Podophyllum peltatum, Tragia cordata, and Smilax herbacea (Martin and Smith 1991). The most frequent canopy associates at the Acer leucoderme sites described by Bridges and Orzell (1989a) include these additional species: Carya cordiformis, Carya ovata, and Carya tomentosa. They also add understory species such as Carex amphibola, Carex oxylepis, Carex retroflexa, Carex willdenowii, Sanguinaria canadensis, Phegopteris hexagonoptera (= Thelypteris hexagonoptera), and Luzula echinata to the potential list of associates. A single plot ascribed to this type on the Sabine National Forest completely lacked Fagus grandifolia in the overstory and was heavily dominated by Quercus alba (NatureServe Ecology unpubl. data). Regionally rare species that may occur in this community include Cypripedium kentuckiense, Solidago auriculata, and Taenidia integerrima.

Dynamics:  This forest is not a pyrogenic community and experiences very infrequent fires due to its position on slopes, its generally moist conditions, and the lack of available fuel generated by the relatively inflammable deciduous leaf litter. This association occurs on portions of the landscape where periodic fires were presumably not common, especially mesic steep slopes, and mid to lower slopes along rivers and small streams throughout portions of the West Gulf Coastal Plain which are influenced by high pH substrate. Uncommon to rare windstorms, diseases and insects are the major disturbances in this uneven-aged forest. Regeneration occurs primarily in canopy gaps (Martin and Smith 1991).

Environmental Description:  This forest occurs on sandy loams and clays, typically with stratified acidic clays over calcareous parent material. Although the surface layers are often circumneutral, the subsoil is moderately alkaline (pH >7.0). Typical soil series are Hollywood and Vaiden silty clay and Cuthbert and Hornbeck clay. Associated geology includes the Fleming Formation in Louisiana and Weches, Reklaw, Wilcox, Cook Mountain, and Yegua formations in eastern Texas where the forest occurs almost exclusively on steep slopes and protected ravines.

Geographic Range: This association is known from the West Gulf Coastal Plain of Louisiana and Texas, and ranges into the Upper West Gulf Coastal Plain of Texas and possibly Arkansas and Louisiana.

Nations: US

States/Provinces:  AR?, LA, TX




Confidence Level: Low - Poorly Documented

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: < American Beech - White Oak / Mitchella Loamy Moist-Mesic Steep Slopes and Ravines (Turner et al. 1999)
? Beech - Magnolia (69) (USFS 1988)
< IA8b. Coastal Plain Calcareous Mesic Forest (Allard 1990)
< IA8e. Beech - Magnolia Forest (Allard 1990)

Concept Author(s): J.E. Mohan and L.M. Smith

Author of Description: J.E. Mohan, L.M. Smith, R.E. Evans

Acknowledgements: No Data Available

Version Date: 01-31-02

  • Allard, D. J. 1990. Southeastern United States ecological community classification. Interim report, Version 1.2. The Nature Conservancy, Southeast Regional Office, Chapel Hill, NC. 96 pp.
  • Bridges, E. L., and S. L. Orzell. 1989a. Longleaf pine communities of the West Gulf Coastal Plain. Natural Areas Journal 9:246-263.
  • Correll, D. S., and M. C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Foundation. Renner, TX. (Second printing, 1979. University of Texas at Dallas, Richardson) 1881 pp.
  • Diamond, D. D. 1993. Classification of the plant communities of Texas (series level). Unpublished document. Texas Natural Heritage Program, Austin. 25 pp.
  • Kutner, L. S., and L. E. Morse. 1996. Reintroduction in a changing climate. In: D. A. Falk, C. I. Millar, and M. Olwell, editors. Restoring diversity: Strategies for reintroduction of endangered plants. Island Press, Washington, DC.
  • LNHP [Louisiana Natural Heritage Program]. 2009. Natural communities of Louisiana. Louisiana Natural Heritage Program, Louisiana Department of Wildlife & Fisheries, Baton Rouge. 46 pp. [http://www.wlf.louisiana.gov/sites/default/files/pdf/page_wildlife/6776-Rare%20Natural%20Communities/LA_NAT_COM.pdf]
  • Little, E. L., Jr. 1979a. Checklist of United States trees (native and naturalized). USDA Agricultural Handbook No. 541. 375 pp.
  • MacRoberts, B. R., and M. H. MacRoberts. 1997c. Floristics of beech-hardwood forest in east Texas. Phytologia 82(1):20-29.
  • Martin, D. L., and L. M. Smith. 1991. A survey and description of the natural plant communities of the Kisatchie National Forest, Winn and Kisatchie districts. Louisiana Department of Wildlife and Fisheries, Baton Rouge, LA. 372 pp.
  • McLeod, C. A. 1975. Southwestern limit of Fagus grandifolia Ehrh. Texas Journal of Science 26:179-184.
  • NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
  • Nixon, E. S. 1985. Trees, shrubs, and woody vines of East Texas. Illustrated by Bruce Lyndon Cummingham. Bruce Lyndon Cummingham Productions, Nacogdoches. 240 pp.
  • Nixon, E. S., K. L. Marietta, R. O. Littlejohn, and H. B. Weyland. 1980a. Woody vegetation of an American beech (Fagus grandifolia) community in eastern Texas. Castanea 45:171-180.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
  • TNHS [Texas Natural History Survey]. No date. Unpublished data. Texas Natural History Survey, The Nature Conservancy, San Antonio.
  • Turner, R. L., J. E. Van Kley, L. S. Smith, and R. E. Evans. 1999. Ecological classification system for the national forests and adjacent areas of the West Gulf Coastal Plain. The Nature Conservancy, Nacogdoches, TX. 95 pp. plus appendices.
  • USFS [U.S. Forest Service]. 1988. Silvicultural examination and prescription field book. USDA Forest Service, Southern Region. Atlanta, GA. 35 pp.