Print Report
CEGL004916 Dichanthelium scoparium - Boehmeria cylindrica / Sphagnum spp. - Polytrichum commune Seepage Meadow
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Broom Witchgrass - Small-spike False Nettle / Peatmoss species - Common Haircap Moss Seepage Meadow
Colloquial Name: Oklahoma Acidic Hillside Seep
Hierarchy Level: Association
Type Concept: These acidic hillside seeps of the southeastern Oklahoma Coastal Plain are herbaceous wetlands formed over beds of decaying vegetable matter, which is loosely consolidated and contains so much water that the surface shakes under foot. These communities occur mainly on the Antlers Sand Formation and are characterized by their topographic position at the base of slopes and on the sides of sandhills. The seep community is dissected by slowly flowing water or small stagnant pools. The composition of stands of this type is variable, but is characterized by dominance by a variety of grasses, sedges, and aster family members. Dichanthelium scoparium is characteristic. This or related vegetation may also be found in sandy or peaty depressions.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association may need renaming based on additional data and rangewide consideration. The original use of Dichanthelium commutatum in the name for this alliance and association was based on an error in Hoagland (1998a) (B. Hoagland pers. comm.). Dichanthelium scoparium is the common grass in sandy seepy areas of southeastern Oklahoma (Hoagland 2000).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The composition of stands of this type is variable, but is characterized by dominance by a variety of grasses, sedges, and aster family members. Dichanthelium scoparium is characteristic and may be dominant. Some other vascular plants include Boehmeria cylindrica, Juncus effusus, Juncus interior, Panicum anceps (Hoagland 2000), Lycopodiella appressa, Eleocharis spp., Rhynchospora gracilenta, Rhynchospora rariflora, Scleria spp., Eriocaulon decangulare, Eriocaulon koernickianum, Typha spp., and Peltandra virginica (OKNHP 1987). Eriocaulon koernickianum is an Oklahoma species of concern.
Dynamics: Small seeps tend to be impounded by beaver dams, and small palustrine wetlands with open water and emergents at the lower end of the drainage, usually immediately below the drainage itself (OKNHP 1987). A seep margin may accompany the seep. This zone may be identified by a shallower depth of wet soils, the presence of more mosses (e.g., Sphagnum spp., Polytrichum commune), Lobelia spp., and various insectivorous plants. These seep margins, when present, occupy the zone between the drier sandhill forests and the seep proper (OKNHP 1987). This seep margin zone is conceptually included in occurrences of this general association. Stands of this association are bounded by Bluejack Oak Sandhill Woodlands and/or Oak-Hickory Forests.
Environmental Description: These herbaceous seepages form along the sides of small drainages in the sandhills mainly on the Antlers Sand Formation of southeastern Oklahoma. Examples are typically small, ranging in size from 2.5 to 100 ha (1 to ca. 40 acres). Peat may not be formed; it may develop from decayed sedges and rushes as well as from small deposits of Sphagnum mosses. They may also be found in sandy or peaty depressions (Hoagland 2000).
Geographic Range: This association is documented from southeastern Oklahoma (Atoka, Choctaw, McCurtain?, and Pushmataha counties).More data are needed to determine whether or not this type is found in adjacent states.
Nations: US
States/Provinces: AR?, OK, TX?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686420
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2Q
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.Ne Atlantic & Gulf Coastal Marsh, Wet Meadow & Shrubland Division | D322 | 2.C.4.Ne |
| Macrogroup | 2.C.4.Ne.2 Beaksedge species - Spikerush species - Panicgrass species Atlantic & Gulf Coastal Plain Wet Prairie & Marsh Macrogroup | M067 | 2.C.4.Ne.2 |
| Group | 2.C.4.Ne.2.e Beaksedge species - Pitcherplant species Seep Group | G187 | 2.C.4.Ne.2.e |
| Alliance | A3375 Cinnamon Fern - Camphor Pluchea - Rosette Grass species Seep Alliance | A3375 | 2.C.4.Ne.2.e |
| Association | CEGL004916 Broom Witchgrass - Small-spike False Nettle / Peatmoss species - Common Haircap Moss Seepage Meadow | CEGL004916 | 2.C.4.Ne.2.e |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Dichanthelium scoparium - Boehmeria cylindrica/Sphagnum subsecundum - Polytrichum commune herbaceous association (Hoagland 2000)
- Hoagland, B. 2000. The vegetation of Oklahoma: A classification for landscape mapping and conservation planning. The Southwestern Naturalist 45(4):385-420.
- Hoagland, B. W. 1998a. Classification of Oklahoma vegetation types. Working draft. University of Oklahoma, Oklahoma Natural Heritage Inventory, Norman. 43 pp.
- Kral, R. 1955. A floristic comparison of two hillside bog localities in northeastern Texas. Field and Laboratory 23:47-69.
- Nixon, E. S., and J. R. Ward. 1986. Floristic composition and management of east Texas pitcher plant bogs. Pages 283-287 in: D. L. Kulhavy and R. N. Conner, editors. Wilderness and natural areas in the eastern United States: A management challenge. Center for Applied Studies, Stephen F. Austin State University, Nacogdoches, TX.
- ONHI [Oklahoma Natural Heritage Inventory]. 1987. Unpublished community descriptions. Oklahoma Natural Heritage Inventory, Norman, OK.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.