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A0320 Crataegus aestivalis - Crataegus opaca - Crataegus rufula Swamp Forest Alliance
Type Concept Sentence: This alliance includes communities dominated by one or more of the mayhaws Crataegus aestivalis, Crataegus opaca, and/or Crataegus rufula, occurring in seasonally flooded depressions, within floodplains or in upland landscapes of the Southeastern Coastal Plain of the United States.
Common (Translated Scientific) Name: May Hawthorn - Riverflat Hawthorn - Rusty Hawthorn Swamp Forest Alliance
Colloquial Name: Mayhaw Pond Swamp Forest
Hierarchy Level: Alliance
Type Concept: This alliance includes communities dominated by one or more of the mayhaws Crataegus aestivalis, Crataegus opaca, and/or Crataegus rufula, occurring in seasonally flooded depressions within floodplains or in upland landscapes in the Southeastern Coastal Plain of the United States. The mayhaws often dominate these seasonally flooded depressions, and are small trees up to 12 m tall and to at least 30 cm dbh. Canopy coverage in mayhaw ponds may vary from a closed canopy to an open, scattered, or zonal canopy of mayhaw. In the Florida Panhandle and adjacent portions of Alabama and Georgia, the various nominal species can occur intermixed. Elsewhere, one or two of the species may be dominant or codominant. The distributions of mayhaw communities are not very well understood.
Diagnostic Characteristics: This alliance includes communities dominated by one or more of the mayhaws Crataegus aestivalis, Crataegus opaca, and/or Crataegus rufula, occurring in seasonally flooded depressions, which may occur either in floodplains or in uplands of the Southeastern Coastal Plain of the United States.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: In the Florida Panhandle and adjacent portions of Alabama and Georgia, the various nominal mayhaw species can occur intermixed, in other areas one of the mayhaws may dominate.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: Mayhaw ponds vary from closed to open, scattered, or zonal canopy of mayhaw.
Floristics: Stands of this alliance are dominated by one or more of the mayhaws Crataegus aestivalis, Crataegus opaca, and/or Crataegus rufula. These mayhaws often dominate seasonally flooded depressions, and are small trees to 12 m tall and to at least 30 cm dbh. In the Florida Panhandle and adjacent portions of Alabama and Georgia, the various species can occur intermixed. Crataegus aestivalis occurs from southeastern North Carolina through South Carolina and Georgia to northern peninsular Florida and eastern Panhandle Florida. Crataegus opaca occurs from eastern Texas east to southern Alabama and extreme western Panhandle Florida. Crataegus rufula occurs in southwestern Georgia, southeastern Alabama, and Panhandle Florida. Mayhaw forests also occur in broad depressions of the central flatwoods of the Florida parishes of eastern Louisiana.
Dynamics: No Data Available
Environmental Description: Stands of this alliance occur in seasonally flooded depressions, which may occur either in floodplains or in uplands of the Southeastern Coastal Plain of the United States.
Geographic Range: This alliance is found in Alabama, Florida, Georgia, Louisiana, Mississippi, and Texas.
Nations: US
States/Provinces: AL, FL, GA, LA, MS, TX
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.898980
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Nb Southeastern North American Flooded & Swamp Forest Division | D062 | 1.B.3.Nb |
| Macrogroup | 1.B.3.Nb.2 Swamp Tupelo - Swamp Chestnut Oak - Bald-cypress Basin Swamp & Flatwoods Macrogroup | M033 | 1.B.3.Nb.2 |
| Group | 1.B.3.Nb.2.a Swamp Tupelo - Ogeechee Tupelo - Bald-cypress Basin Swamp Group | G038 | 1.B.3.Nb.2.a |
| Alliance | A0320 May Hawthorn - Riverflat Hawthorn - Rusty Hawthorn Swamp Forest Alliance | A0320 | 1.B.3.Nb.2.a |
| Association | CEGL004639 May Hawthorn Swamp Forest | CEGL004639 | 1.B.3.Nb.2.a |
| Association | CEGL007386 (Laurel Oak) / Riverflat Hawthorn - Green Hawthorn Swamp Forest | CEGL007386 | 1.B.3.Nb.2.a |
| Association | CEGL007783 Rusty Hawthorn Swamp Forest | CEGL007783 | 1.B.3.Nb.2.a |
Concept Lineage: (pasted verbatim in from A.320, without edits)
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = May Haw Pond (Wharton et al. 1982)
>< Willow Oak / Justicia Clayey Wet Upland Depressions (Turner et al. 1999)
>< Willow Oak / Justicia Clayey Wet Upland Depressions (Turner et al. 1999)
- Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
- 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.
- Wharton, C. H., W. M. Kitchens, E. C. Pendleton, and T. W. Sipe. 1982. The ecology of bottomland hardwood swamps of the Southeast: A community profile. U.S. Fish and Wildlife Service, Office of Biological Services. FWS/OBS-81/37. Washington, DC.