Print Report

CEGL000362 Picea engelmannii / Leymus triticoides Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Engelmann Spruce / Beardless Wildrye Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This plant association is restricted to the upper elevations above 3020 m (9900 feet) of the Capitan Mountains in south-central New Mexico. It occurs on steep slopes with cobbly soils derived from talus. Picea engelmannii is the dominant in association with Pseudotsuga menziesii and occasionally Abies lasiocarpa. Shrubs are well-represented (Holodiscus dumosus, Acer glabrum, and Jamesia americana), but abundant Leymus triticoides is diagnostic in the herb layer.

Diagnostic Characteristics: Picea engelmannii is present with Pseudotsuga menziesii as the most important codominant. Abies lasiocarpa varies from absent to codominant. Shrubby undergrowth provides varying densities from 2-23% cover. Leymus triticoides may provide up to 20% cover within the stand.

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type is similar to other scree/talus types such as ~Abies concolor / Leymus triticoides Woodland (CEGL000886)$$, ~Abies lasiocarpa / Holodiscus dumosus Scree Woodland (CEGL000918)$$, and ~Abies lasiocarpa / Jamesia americana Forest (CEGL000312)$$.

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

Physiognomy and Structure: No Data Available

Floristics: Picea engelmannii is the dominant in association with Pseudotsuga menziesii and occasionally Abies lasiocarpa. Shrubs are well-represented (Holodiscus dumosus, Acer glabrum, and Jamesia americana), but abundant Leymus triticoides is diagnostic in the herb layer.

Dynamics:  If burned, stands are likely to regenerate in Populus tremuloides with Picea engelmannii remnants.

Environmental Description:  This plant association is restricted to the upper elevations above 3020 m (9900 feet) of the Capitan Mountains in south-central New Mexico. It occurs on steep slopes with cobbly soils derived from talus.

Geographic Range: This association is restricted to the Capitan Mountains of south-central New Mexico.

Nations: US

States/Provinces:  NM




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Picea engelmannii / Elymus triticoides Habitat Type (Alexander et al. 1984a)
= Picea engelmannii / Elymus triticoides Habitat Type (Moir and Ludwig 1979)
= Picea engelmannii / Leymus triticoides (Stuever and Hayden 1997a)

Concept Author(s): M.C. Stuever and J.S. Hayden (1997a)

Author of Description: E. Muldavin

Acknowledgements: No Data Available

Version Date: 01-23-19

  • Alexander, B. G., Jr., F. Ronco, Jr., E. L. Fitzhugh, and J. A. Ludwig. 1984a. A classification of forest habitat types of the Lincoln National Forest, New Mexico. General Technical Report RM-104. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. 29 pp.
  • 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.
  • Moir, W. H., and J. A. Ludwig. 1979. A classification of spruce-fir and mixed conifer habitat types of Arizona and New Mexico. Research Paper RM-207. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. 47 pp.
  • Stuever, M. C., and J. S. Hayden. 1997a. Plant associations of Arizona and New Mexico, edition 3. Volume 1: Forests. USDA Forest Service, Southwestern Region. Habitat Typing Guides. 291 pp.
  • USFS [U.S. Forest Service]. 1986. Forest and woodland habitat types (plant associations) of southern New Mexico and central Arizona (north of the Mogollon Rim). USDA Forest Service, Southwestern Region, Albuquerque, NM. Second edition, 140 pp. plus insert.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.