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CEGL003889 Toxicodendron radicans / (Polymnia cossatotensis) Ouachita Talus Vegetation
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Eastern Poison-ivy / (Cossatot Mountain Leafcup) Ouachita Talus Vegetation
Colloquial Name: Ouachita Mountains Novaculite Talus Slope
Hierarchy Level: Association
Type Concept: This association consists of novaculite talus slopes with variable cover of Toxicodendron radicans. Other species may include the endemic herb Polymnia cossatotensis (which may be locally abundant or even dominant), Dryopteris marginalis, Ribes cynosbati, and Parthenocissus quinquefolia. This association occupies 1- to 10-acre, treeless openings on steep unstable slopes covered with novaculite boulders. It is apparently restricted to the Ouachita Mountain region of Arkansas and Oklahoma.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Examples of this community are known from Tom Mountain, Blaylock Mountain, and Peter Mountain in Arkansas, and also in the Beaver Bend Hills of Oklahoma.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The most constant and characteristic plant in stands of this vegetation is Toxicodendron radicans. Other species may include the endemic herb Polymnia cossatotensis (which may be locally abundant or even dominant), as well as Dryopteris marginalis, Ribes cynosbati, and Parthenocissus quinquefolia.
Dynamics: No Data Available
Environmental Description: This association occupies 1- to 10-acre, treeless openings on steep unstable slopes covered with novaculite boulders. The instability of the substrate helps keep sites open. Novaculite is a weakly metamorphosed rock of sedimentary origin as a bedded, virtually pure silica chert deposited under geosynclinal conditions. It is primarily composed of microcrystalline quartz and chalcedony. The Arkansas novaculite formation is of Devonian and Mississippian age and consists of novaculite interbedded with some shale. It ranges in thickness from about 76 to 275 m (250-900 feet) (Arkansas Geological Commission 2001, Babcock et al. 2001).
Geographic Range: This community is known only from the Ouachita Mountain region of Arkansas and Oklahoma.
Nations: US
States/Provinces: AR, OK
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683886
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G1
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 6 Open Rock Vegetation Class | C06 | 6 |
| Subclass | 6.B Temperate & Boreal Open Rock Vegetation Subclass | S04 | 6.B |
| Formation | 6.B.1 Temperate & Boreal Cliff, Scree & Other Rock Vegetation Formation | F034 | 6.B.1 |
| Division | 6.B.1.Na Eastern North American Temperate Cliff, Scree & Rock Vegetation Division | D051 | 6.B.1.Na |
| Macrogroup | 6.B.1.Na.1 Shrubby Fivefingers - Rock Polypody / Cup Lichen species Eastern North American Cliff & Rock Vegetation Macrogroup | M111 | 6.B.1.Na.1 |
| Group | 6.B.1.Na.1.d Central Midwest-Interior Cliff & Rock Vegetation Group | G841 | 6.B.1.Na.1.d |
| Alliance | A4228 Central Midwest-Interior Acidic Talus Alliance | A4228 | 6.B.1.Na.1.d |
| Association | CEGL003889 Eastern Poison-ivy / (Cossatot Mountain Leafcup) Ouachita Talus Vegetation | CEGL003889 | 6.B.1.Na.1.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Arkansas Geological Commission. 2001. Novaculite. [http://www.state.ar.us/agc/novaculi.htm]. (accessed December 10, 2001)
- Babcock, L. L., and others. 2001. Novaculite -- the Arkansas sharpening stone. [http://www.knifeart.com/knifeart/novarsharsto.html] (accessed 10 December 2001).
- Hoagland, B. 2000. The vegetation of Oklahoma: A classification for landscape mapping and conservation planning. The Southwestern Naturalist 45(4):385-420.
- Palmer, E. J. 1924. The ligneous flora of Rich Mountain, Arkansas and Oklahoma. Journal of the Arnold Arboretum 5:108-134.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.