Print Report

CEGL001645 Muhlenbergia emersleyi - Bouteloua hirsuta Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Bullgrass - Hairy Grama Grassland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association occurs in southwestern New Mexico near the Animas Mountains. It is found on moderately steep slopes with southerly aspects at an elevation of 1770 m (5800 feet) on rhyolitic parent material. The grass layer is abundant with Muhlenbergia emersleyi well represented, but not necessarily the dominant. Other grasses present are Bothriochloa barbinodis, Lycurus phleoides, Aristida schiedeana var. orcuttiana, Eragrostis intermedia, Panicum hirticaule, and Setaria grisebachii. The shrub layer is poorly represented though diverse and includes Dasylirion wheeleri, Nolina microcarpa, Mimosa aculeaticarpa var. biuncifera, Brickellia venosa, and Gutierrezia sarothrae. The forb layer is scarce in cover but is highly diverse and has 20+ species present. This association grades into ~Quercus emoryi / Muhlenbergia emersleyi Scrub Woodland (CEGL000685)$$ as elevation increases.

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: The grass layer is abundant with Muhlenbergia emersleyi well represented, but not necessarily the dominant. Other grasses present are Bothriochloa barbinodis, Lycurus phleoides, Aristida schiedeana var. orcuttiana (= Aristida orcuttiana), Eragrostis intermedia, Panicum hirticaule, and Setaria grisebachii. The shrub layer is poorly represented though diverse and includes Dasylirion wheeleri, Nolina microcarpa, Mimosa aculeaticarpa var. biuncifera, Brickellia venosa, and Gutierrezia sarothrae. The forb layer is scarce in cover but is highly diverse and has 20+ species present.

Dynamics:  No Data Available

Environmental Description:  It is found on moderately steep slopes with southerly aspects at an elevation of 1770 m (5800 feet) on rhyolitic parent material.

Geographic Range: This association occurs in southwestern New Mexico near the Animas Mountains.

Nations: US

States/Provinces:  NM




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G2?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Muhlenbergia emersleyi - Bouteloua hirsuta PA (Muldavin et al. 1998a)
= Muhlenbergia emersleyi - Bouteloua hirsuta PA (Bourgeron et al. 1993b)

Concept Author(s): Y. Chauvin

Author of Description: Y. Chauvin

Acknowledgements: No Data Available

Version Date: 11-26-97

  • Bourgeron, P. S., L. D. Engelking, H. C. Humphries, E. Muldavin, and W. H. Moir. 1993b. Assessing the conservation value of the Gray Ranch: Rarity, diversity and representativeness. Unpublished report prepared for The Nature Conservancy by the Western Heritage Task Force, Boulder, CO. (Volume I and II).
  • 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.
  • Muldavin, E., V. Archer, and P. Neville. 1998a. A vegetation map of the Borderlands Ecosystem Management Area. Final report submitted to USDA Forest Service, Rocky Mountain Experiment Station, Flagstaff, AZ, by the New Mexico Natural Heritage Program, University of New Mexico, Albuquerque, NM. 58 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.