Print Report

CEGL000554 Quercus macrocarpa / Carex inops ssp. heliophila Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Bur Oak / Sun Sedge Woodland

Colloquial Name: Great Plains Bur Oak / Sedge Woodland

Hierarchy Level:  Association

Type Concept: This type has been provisionally applied to the extensive oak stands in areas underlain by siliceous shales, clay and bentonite on the eastern and northern flanks of the northern Black Hills. Cover of Quercus macrocarpa is quite variable. On the eastern flank of the northern Black Hills, rolling low hills are covered with oak savannas. On the northern flank, slopes are somewhat steeper, and denser stands of oaks are found. In some stands seen during reconnaissance, Carex inops ssp. heliophila was the dominant understory graminoid.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type has been provisionally applied to the extensive oak stands on the eastern and northern flanks of the northern Black Hills (in the vicinity of Colony, Wyoming, and Alva, Montana). However, there is at least one other association present, with mixed-grass prairie species, such as Hesperostipa comata, dominating the understory. These stands may be examples of the Bur Oak / Mixedgrass Shale Wooded Herbaceous type, ~Quercus macrocarpa / Mixedgrass Shale Wooded Grassland (CEGL002164)$$. Neither type has been surveyed beyond limited reconnaissance (mostly from roadsides).

This type has been observed in areas of the Hogback around the Black Hills (H. Marriott pers. comm. 1999).

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Stands occur on the eastern and northern flanks of the northern Black Hills (in the vicinity of Colony, Wyoming, and Alva, Montana). Cover of Quercus macrocarpa is quite variable. On the eastern flank of the northern Black Hills in the vicinity of Colony, rolling low hills are covered with oak savannas. On the northern flank, slopes are somewhat steeper, and denser stands of oaks are found. In these situations, oaks are sometimes small and shrub-like, forming thickets. In some stands seen during reconnaissance, Carex inops ssp. heliophila was the dominant understory graminoid. Stands where mixed-grass prairie species such as Hesperostipa comata (= Stipa comata) dominate the understory may fall outside the concept of this type (Marriott and Faber-Langendoen 2000).

Dynamics:  No Data Available

Environmental Description:  This type is best developed in the northern and northeastern foothills in areas underlain by the Cretaceous Mowry Formation, which includes siliceous shales, clays and bentonite. On the eastern flank of the northern Black Hills in the vicinity of Colony, Wyoming, these strata dip very gently, and form extensive rolling low hills covered with oak savannas. On the northern flank, dips are somewhat steeper, and denser stands of oaks are found. Elevations are in the range of 950-1150 m (3100-3700 feet) (Marriott and Faber-Langendoen 2000).

Geographic Range: This type occurs in the Great Plains and margins of the Black Hills in the Unites States, ranging from western South Dakota to northeastern Wyoming. Stands are most extensive on the eastern and northern flanks of the northern Black Hills (in the vicinity of Colony, Wyoming, and Alva, Montana).

Nations: US

States/Provinces:  SD, WY




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G1G2

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Quercus macrocarpa / Carex inops ssp. heliophila Woodland (Marriott and Faber-Langendoen 2000)
= Quercus macrocarpa / Carex inops ssp. heliophila Woodland (Faber-Langendoen 2001)

Concept Author(s): H. Marriott and D. Faber-Langendoen (2000)

Author of Description: G.P. Jones, H. Marriott and D. Faber-Langendoen

Acknowledgements: No Data Available

Version Date: 11-09-00

  • Faber-Langendoen, D., editor. 2001. Plant communities of the Midwest: Classification in an ecological context. Association for Biodiversity Information, Arlington, VA. 61 pp. plus appendix (705 pp.).
  • Marriott, H. J., and D. Faber-Langendoen. 2000. The Black Hills community inventory. Volume 2: Plant community descriptions. The Nature Conservancy, Midwest Conservation Science Center and Association for Biodiversity Information, Minneapolis, MN. 326 pp.
  • Midwestern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Minneapolis, MN.
  • SDNHP [South Dakota Natural Heritage Program]. 2018. Unpublished data. South Dakota Natural Heritage Program, Pierre, SD.
  • WNDD [Wyoming Natural Diversity Database]. No date. Unpublished data on file. Wyoming Natural Diversity Database, University of Wyoming, Laramie, WY.