Print Report

CEGL008576 Quercus phellos / Chasmanthium laxum Wet Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Willow Oak / Slender Woodoats Wet Forest

Colloquial Name: Upper West Gulf Coastal Plain Willow Oak Shallow Depression Forest

Hierarchy Level:  Association

Type Concept: This willow oak community occurs on upland, interstream divides in the Upper West Gulf Coastal Plain in slight topographic depressions in eastern Texas, and may range into southern Arkansas and adjacent Louisiana and Oklahoma. The canopy of this forest is dominated, often monospecifically, by a closed yet not densely forested canopy of Quercus phellos. This community is very low in species diversity. Subcanopy, shrub, and ground layer vegetation is usually quite sparse.

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: Quercus phellos may comprise 60% or more of the overstory canopy in most examples. Shrubs are uncommon in this association but may include an occasional Ilex decidua. Woody vines, namely Berchemia scandens, Bignonia capreolata, Smilax bona-nox, Smilax rotundifolia, Toxicodendron radicans, and Smilax smallii, comprise a significant percentage of the species present. The herbaceous layer is quite sparse. The dominant species is Chasmanthium laxum, and almost no other species are frequently encountered. Sphagnum sp. may be present in small patches.

Dynamics:  No Data Available

Environmental Description:  This forest occurs in slight topographic depressions on broad, nearly level uplands. These areas are not subject to overbank flooding but do pond water after local rainfall events. Many of these sites are very small "inclusions" which are too small to be mapped separately on soils maps. It is hypothesized that soils may have a fragipan layer which impedes drainage of precipitation downward through the soil profile. This type includes both "shallow upland depressions" and "flatwoods" which are related ecologically and similar in floristic composition.

Geographic Range: It is found in eastern Texas, and may range into southern Arkansas and adjacent Louisiana and Oklahoma.

Nations: US

States/Provinces:  AR, LA?, OK?, TX




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G3?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Clayey Wet Upland Willow Oak Depressions (Turner et al. 1999)

Concept Author(s): R.E. Evans, M. Pyne and J. Teague

Author of Description: R.E. Evans

Acknowledgements: No Data Available

Version Date: 05-20-02

  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
  • 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.
  • Turner, R. L., J. E. Van Kley, L. S. Smith, and R. E. Evans. No date. Unpublished data from the national forests and adjacent areas of the West Gulf Coastal Plain. The Nature Conservancy, Nacogdoches, TX.