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CEGL004285 Hymenocallis coronaria - Justicia americana Riverbed Vegetation
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Rocky-shoal Spiderlily - American Water-willow Riverbed Vegetation
Colloquial Name: Spiderlily - Water-willow Rocky Shoals
Hierarchy Level: Association
Type Concept: This association covers rocky shoals with dense beds of Hymenocallis coronaria, usually also with substantial Justicia americana and Podostemum ceratophyllum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This vegetation is most notably found in the Cahaba River, Alabama, and the Catawba River of South Carolina, but also in the Piedmont of Georgia and other locations in South Carolina. There probably are less than 200 acres in total extent. We treat Hymenocallis coronaria as distinct from Hymenocallis occidentalis.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This vegetation is dominated by Hymenocallis coronaria, usually also with substantial Justicia americana and Podostemum ceratophyllum. Other species present in smaller amounts include Saururus cernuus, Leersia lenticularis, Schoenoplectus pungens, Mikania scandens, Cephalanthus occidentalis, and Cyperus sp.
Dynamics: The maintenance of this association requires a temporarily flooded hydrology. Many of the rivers where it is found have had their hydrologies altered by dams, which have had a negative effect on occurrences of this association.
Environmental Description: This association is found in rocky shoals of submontane rivers (e.g., in the Ridge and Valley, Piedmont).
Geographic Range: This association is known from river shoals in the Piedmont of South Carolina, Georgia, and Alabama, and from the southern Ridge and Valley of Alabama.
Nations: US
States/Provinces: AL, GA, SC
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.684956
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G1
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation | F013 | 2.C.4 |
| Division | 2.C.4.Nd Eastern North American Temperate Freshwater Marsh, Wet Meadow & Shrubland Division | D323 | 2.C.4.Nd |
| Macrogroup | 2.C.4.Nd.3 Eastern North American Wet Shoreline Vegetation Macrogroup | M880 | 2.C.4.Nd.3 |
| Group | 2.C.4.Nd.3.a Eastern North American Riverine Wetland Vegetation Group | G755 | 2.C.4.Nd.3.a |
| Alliance | A1657 American Water-willow Riverbed Alliance | A1657 | 2.C.4.Nd.3.a |
| Association | CEGL004285 Rocky-shoal Spiderlily - American Water-willow Riverbed Vegetation | CEGL004285 | 2.C.4.Nd.3.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: < IIE3a. Riverside Shoal and Stream Bar Complex (Allard 1990)
- 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.
- NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
- Nelson, J. B. 1986. The natural communities of South Carolina: Initial classification and description. South Carolina Wildlife and Marine Resources Department, Division of Wildlife and Freshwater Fisheries, Columbia, SC. 55 pp.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.