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CEGL004276 Sporobolus vaginiflorus var. ozarkanus - Diodia teres - Croton michauxii var. ellipticus - Ruellia humilis Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ozark Dropseed - Rough Buttonweed - Willdenow''s Croton - Fringeleaf Wild Petunia Grassland
Colloquial Name: Piedmont Diabase Flatrock Glade
Hierarchy Level: Association
Type Concept: This community includes glades over diabase in north-central North Carolina. Abundant species are Diodia teres, Croton michauxii var. ellipticus, Sporobolus vaginiflorus var. ozarkanus, and Phemeranthus spp. Characteristic species include Trichostema brachiatum, Sporobolus clandestinus, Sporobolus vaginiflorus var. ozarkanus, Portulaca smallii, Polygonum tenue, Symphyotrichum parviceps, Phemeranthus teretifolius, Phemeranthus mengesii?, Ruellia humilis, Cyperus granitophilus, Bulbostylis capillaris, Commelina erecta var. erecta, and Manfreda virginica. Some additional herbs include Packera anonyma, Matelea decipiens, Lithospermum canescens, Piptochaetium avenaceum, Erigeron strigosus, Schizachyrium scoparium, Blephilia ciliata, and Sisyrinchium sp. Wetter areas have Zephyranthes atamasca. Some shrubs which are present on the margins include Symphoricarpos orbiculatus, Rhus aromatica, Ulmus alata, Celtis tenuifolia, Viburnum rafinesqueanum, Hypericum hypericoides, and Vitis rotundifolia.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Species selected to name this association need further consideration. They should reflect the combination of a strong southeastern Piedmont granite flatrock component, combined with a strong midwestern calcareous glade component. This occurs in a complex with a Juniperus virginiana var. virginiana - Ulmus alata - Fraxinus americana - Carya glabra forest, but shares few species with it.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Abundant species at the one known site include Diodia teres, Croton michauxii var. ellipticus (= Croton willdenowii), Sporobolus vaginiflorus var. ozarkanus (= Sporobolus ozarkanus), and Phemeranthus (= Talinum) spp. Characteristic species include Trichostema brachiatum, Sporobolus clandestinus, Portulaca smallii, Polygonum tenue, Ruellia humilis, Symphyotrichum parviceps (= Aster parviceps), Phemeranthus teretifolius (= Talinum teretifolium), Phemeranthus mengesii (= Talinum mengesii)?, Cyperus granitophilus, Bulbostylis capillaris, Commelina erecta var. erecta, and Manfreda virginica. Some additional herbs include Packera anonyma, Matelea decipiens, Lithospermum canescens, Piptochaetium avenaceum, Erigeron strigosus, Schizachyrium scoparium, Blephilia ciliata, and Sisyrinchium sp. Wetter areas have Zephyranthes atamasca. Some shrubs which are present on the margins include Symphoricarpos orbiculatus, Rhus aromatica, Ulmus alata, Celtis tenuifolia, Viburnum rafinesqueanum, Hypericum hypericoides, and Vitis rotundifolia.
Dynamics: No Data Available
Environmental Description: This community occurs in a very unusual edaphic situation, on shallow soils over diabase in north-central North Carolina.
Geographic Range: This community is known only from Granville County, north-central North Carolina.
Nations: US
States/Provinces: NC
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683581
Confidence Level: Moderate
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.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.2 Temperate Grassland & Shrubland Formation | F012 | 2.B.2 |
| Division | 2.B.2.Nc Eastern North American Grassland & Shrubland Division | D024 | 2.B.2.Nc |
| Macrogroup | 2.B.2.Nc.3 Little Bluestem - Dropseed species Central Interior Calcareous Scrub & Grassland Macrogroup | M508 | 2.B.2.Nc.3 |
| Group | 2.B.2.Nc.3.b Little Bluestem - Sideoats Grama - Diamond-flowers Central Glade & Barrens Group | G179 | 2.B.2.Nc.3.b |
| Alliance | A1815 Barrens Dropseed - Poverty Dropseed Alkaline Bedrock Annual Grassland Alliance | A1815 | 2.B.2.Nc.3.b |
| Association | CEGL004276 Ozark Dropseed - Rough Buttonweed - Willdenow''s Croton - Fringeleaf Wild Petunia Grassland | CEGL004276 | 2.B.2.Nc.3.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Cedar Glades on Diabase Outcrops (LeGrand 1988)
= Diabase Glade (Schafale and Weakley 1990)
? IE12a. Piedmont Mafic Glade (Allard 1990)
= Diabase Glade (Schafale and Weakley 1990)
? IE12a. Piedmont Mafic Glade (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.
- LeGrand, H. E., Jr. 1988. Cedar glades on diabase outcrops: A newly described community type. Castanea 53:168-172.
- Schafale, M. P. 2012. Classification of the natural communities of North Carolina, 4th Approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.
- Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina. Third approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh. 325 pp.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.