Print Report

CEGL007386 (Quercus laurifolia) / Crataegus opaca - Crataegus viridis Swamp Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: (Laurel Oak) / Riverflat Hawthorn - Green Hawthorn Swamp Forest

Colloquial Name: Western Mayhaw Pond

Hierarchy Level:  Association

Type Concept: This Gulf Coastal Plain community comprises Crataegus-dominated depression forests (5-10 m tall), which often have a scattered emergent canopy of Quercus laurifolia, and to a lesser extent Quercus phellos. This type occurs in upland depressions or poorly drained flatwoods environments in the West Gulf Coastal Plain of eastern Texas and Louisiana, ranging apparently to Mississippi and possibly Alabama. These sites take on the appearance of shrublands since the canopy tends to be much shorter statured than the surrounding areas. Crataegus viridis and Crataegus opaca are characteristic in stands of this type. Most of the individual stems are small diameter with relatively swollen bases, although occasional large-diameter oaks (often Quercus phellos) are present. Herb species are generally sparse and the type is generally low in species diversity. These communities are sometimes known colloquially as ''mayhaw slashes'' in Louisiana.

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: Crataegus viridis and Crataegus opaca are characteristic in stands of this type. Other woody species of this community can include Fraxinus caroliniana, Nyssa biflora, Quercus nigra, Diospyros virginiana, Gleditsia sp., Crataegus marshallii, Crataegus viridis, and other Crataegus spp. Crataegus opaca is the most abundant species in two plots of this type in eastern Texas (Turner et al. unpubl. data, NatureServe Ecology unpubl. data). Cephalanthus occidentalis can be common in the shrub stratum, and Pinus taeda may be present along the drier edges of these depressions. Understory species may include Justicia ovata, Carex frankii, Chasmanthium laxum, Sabal minor, Polygonum hydropiperoides, Brunnichia ovata, Lycopus rubellus, Boehmeria cylindrica, Juncus effusus, and others (Turner et al. unpubl. data, NatureServe Ecology unpubl. data).

Dynamics:  No Data Available

Environmental Description:  This type was originally defined from scattered depressions on Pleistocene terraces that have been reworked by wind into a ridge-and-swale microtopography in eastern Texas. Characteristic soils are the Guyton series (Typic Glossaqualf). These areas are likely former stream terraces, although they are no longer directly affected by overbank flooding. These isolated ponds or flatwood depressions typically retain standing water for much of the winter and possibly into the spring or early summer depending upon seasonal precipitation.

Geographic Range: This community ranges from the West Gulf Coastal Plain of Texas, east into the East Gulf Coastal Plain of Mississippi and possibly Alabama.

Nations: US

States/Provinces:  AL?, LA, MS, TX




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G1

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: < Willow Oak / Justicia Clayey Wet Upland Depressions (Turner et al. 1999)

Concept Author(s): A.S. Weakley

Author of Description: R.E. Evans

Acknowledgements: No Data Available

Version Date: 05-20-02

  • NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
  • 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.
  • Turner, R. L., J. E. Van Kley, and L. M. Smith. 1997. Field guide: Ecological classification system for the national forests and surrounding areas of the western Gulf Coastal Plain. Final draft report. The Nature Conservancy, Nacogdoches, TX. 95 pp.