Print Report

CEGL001499 Yucca glauca / Pseudoroegneria spicata Shrub Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Soapweed Yucca / Bluebunch Wheatgrass Shrub Grassland

Colloquial Name: Soapweed Yucca / Bluebunch Wheatgrass Shrub Prairie

Hierarchy Level:  Association

Type Concept: This association is currently only described from Bighorn Canyon National Recreation Area, Montana. Additional global information will be added as it becomes available. This uncommon type was sampled at four locations. Typically the sites occur on uplands with low to moderately steep slopes. Soils range from mesic to xeric, are well-drained, and have a clay loam texture. Small rocks and bare ground make up the biggest proportion of the unvegetated layer, with 33 and 38% cover, respectively. The dwarf-shrub layer is made up of three common species: Yucca glauca, Gutierrezia sarothrae, and Artemisia frigida. Artemisia nova may also be present with low cover (<20%). Total cover for this layer ranges from 10-25%. The herbaceous layer (50-75%) is very diverse, but Pseudoroegneria spicata, Carex filifolia, and Bouteloua gracilis are more abundant than others.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This shrub grassland is known from Montana.

Nations: US

States/Provinces:  MT




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G4Q

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Yucca glauca / Pseudoroegneria spicata Shrub Herbaceous Vegetation (Soapweed Yucca / Bluebunch Wheatgrass Shrub Herbaceous Vegetation) (Stevens et al. 2015)

Concept Author(s): Stevens et al. (2015)

Author of Description: J. Stevens and T. Talbot

Acknowledgements: No Data Available

Version Date: 07-19-18

  • Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
  • MTNHP [Montana Natural Heritage Program]. 2002b. List of ecological communities for Montana. Montana Natural Heritage Program, Montana State Library, Helena, MT.
  • MTNHP [Montana Natural Heritage Program]. No date. Unpublished data on file. Montana Natural Heritage Program, Helena, MT.
  • Stevens, J. E., D. S. Jones, and K. J. Benner. 2015. Vegetation classification and mapping project report: Bighorn Canyon National Recreation Area. Natural Resource Report NPS/GRYN/NRR--2015/1070. National Park Service, Fort Collins, CO. 350 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.