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Pseudotsuga menziesii / Muhlenbergia montana Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii / Muhlenbergia montana Forest
Reference: NatureServe Biotics 2019
Description: This forested plant association occurs on mountains and plateaus in Trans-Pecos Texas, New Mexico, Arizona, and Colorado. Sites are variable and include rocky ridgetops, gentle to steep slopes, streamsides, broken lava flows and cinder cones. Elevation ranges from 2655-2970 m (8700-9750 feet) on steep south- and west-facing slopes, and down to 2290 m (7500 feet) on cool, northerly slopes. Substrates are generally dry, shallow, well-drained, gravelly or cobbly, coarse-textured soils. Lower elevation soils may be deep sand or cinder. The vegetation is characterized by an open to nearly closed evergreen tree canopy dominated or codominated by <i>Pseudotsuga menziesii</i> with a <i>Muhlenbergia montana</i>-dominated graminoid layer. Other tree species may include large <i>Pinus ponderosa</i> (often codominant) and scattered <i>Pinus strobiformis, Pinus flexilis, Pinus edulis</i>, or <i>Juniperus</i> spp. (especially on drier sites). <i>Abies concolor</i> is not present or accidental. <i>Quercus gambelii</i> may be present in the subcanopy (tree form) or tall-shrub layer, but with less than 5% cover. Shrub cover is typically sparse (&lt;10% cover) and consists of scattered <i>Ceanothus fendleri, Cercocarpus montanus, Holodiscus dumosus, Mahonia repens, Quercus grisea</i>, or <i>Ribes cereum</i>. The herbaceous layer is dominated by graminoids and is moderately dense and diverse. <i>Muhlenbergia montana</i> is the most consistent graminoid species and typically dominates. Forb cover is sparse. 
Accession Code: urn:lsid:vegbank.org:commConcept:29352-{29030EC6-CBB2-4B85-98E4-523336A444D9}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 30-Oct-2018 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.689426 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000443
  Translated: Douglas-fir / Mountain Muhly Forest
  Scientific: Pseudotsuga menziesii / Muhlenbergia montana Forest
(convergence) and Synonyms:
(similar) Pseudotsuga menziesii / Muhlenbergia montana Forest
(similar) CEGL000443
(similar) Pseudotsuga menziesii / Muhlenbergia montana Forest