Print Report
CEGL002216 Sporobolus silveanus - Tridens strictus Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Silveus'' Dropseed - Longspike Tridens Grassland
Colloquial Name: Silveus'' Dropseed - Longspike Tridens Tallgrass Prairie
Hierarchy Level: Association
Type Concept: This tallgrass community is dominated by Sporobolus silveanus, with lesser amounts of Tridens strictus and Paspalum floridanum. Typically there is a distinct stratum of low-growing species, including Dichanthelium linearifolium, Dichanthelium aciculare, Dichanthelium oligosanthes var. oligosanthes, Aira elegans, Eragrostis hirsuta, and Eragrostis capillaris. Areas which have been mowed or overgrazed may have Andropogon ternarius, Rudbeckia maxima, Marshallia caespitosa or scattered woody species such as Maclura pomifera or Juniperus virginiana var. virginiana. This community occurs on loamy, low pH upland soils classified as Alfisols. Low, circular mounds called mima or pimple mounds dot the otherwise flat to gently rolling landscape in the northeastern portion of the Blackland Prairie in eastern Texas.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Species composition in this community varies with changes in microtopography. A similar community dominated by Sporobolus silveanus and Carex meadii is ~Sporobolus silveanus - Carex meadii Grassland (CEGL004521)$$, which also occurs in the northern portion of the Blackland Prairie of Texas (Diamond and Smeins 1985).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This tallgrass community is dominated by Sporobolus silveanus with lesser amounts of Tridens strictus and Paspalum floridanum. Typically there is a distinct strata of low-growing species, including Dichanthelium linearifolium, Dichanthelium aciculare, Dichanthelium oligosanthes var. oligosanthes, Aira elegans, Eragrostis hirsuta, and Eragrostis capillaris (Collins et al. 1975). Areas which have been mowed or overgrazed may have Andropogon ternarius, Rudbeckia maxima, Marshallia caespitosa, or scattered woody species such as Maclura pomifera or Juniperus virginiana var. virginiana (Collins 1972).
Dynamics: No Data Available
Environmental Description: This community occurs on loamy, low pH upland soils classified as Alfisols. Low, circular mounds called mima or pimple mounds dot the otherwise flat to gently rolling landscape. Average annual precipitation is 106-115 cm/year (Collins et al. 1975).
Geographic Range: This community is restricted to the northeastern portion of the Blackland Prairie in eastern Texas.
Nations: US
States/Provinces: TX
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689420
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
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.Nb Central North American Grassland & Shrubland Division | D023 | 2.B.2.Nb |
| Macrogroup | 2.B.2.Nb.1 Big Bluestem - Indiangrass - Dense Blazingstar Tallgrass Prairie Macrogroup | M054 | 2.B.2.Nb.1 |
| Group | 2.B.2.Nb.1.a Little Bluestem - Prairie Bishop - Brownseed Crowngrass Tallgrass Prairie Group | G335 | 2.B.2.Nb.1.a |
| Alliance | A4063 Little Bluestem - Indiangrass - Big Bluestem Grassland Alliance | A4063 | 2.B.2.Nb.1.a |
| Association | CEGL002216 Silveus'' Dropseed - Longspike Tridens Grassland | CEGL002216 | 2.B.2.Nb.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Sporobolus silveanus - Carex meadii Community Type (Diamond and Smeins 1988)
< ID4j. Silveanus Dropseed Prairie (Allard 1990)
< ID4j. Silveanus Dropseed Prairie (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.
- Collins, O. B. 1972. Climax vegetation and soils of the Blackland Prairie of Texas. M.S. thesis, Texas A & M University, College Station. 104 pp.
- Collins, O. B., F. E. Smeins, and D. H. Riskind. 1975. Plant communities of the Blackland Prairie of Texas. Pages 75-88 in: M. K. Wali, editor. Prairie: A multiple view. University of North Dakota Press, Grand Forks, ND.
- Diamond, D. D. 1993. Classification of the plant communities of Texas (series level). Unpublished document. Texas Natural Heritage Program, Austin. 25 pp.
- Diamond, D. D., and F. E. Smeins. 1985. Composition, classification and species response patterns of remnant tallgrass prairies in Texas. The American Midland Naturalist 113:249-308.
- Diamond, D. D., and F. E. Smeins. 1988. Gradient analysis of remnant true and upper coastal prairie grasslands of North America. Canadian Journal of Botany 66:2152-2161.
- Diamond, D., B. Amos, T. Cook, R. Edwards, W. Elliot, R. Evans, and K. Kennedy. 1992. Endangered, threatened, and watchlist of natural communities of Texas. Texas Organization for Endangered Species. Austin, TX. 14 pp.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.