Print Report

CEGL001104 Abies grandis / Cornus nuttallii - Acer glabrum Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Grand Fir / Pacific Dogwood - Rocky Mountain Maple Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This closed to open forest occurs in the east Cascades of Washington near Mount Adams. This association occurs between 884 and 1128 m (2900-3700 feet) elevation and primarily on north to east aspects. Abies grandis dominates the canopy that occasionally contains Pseudotsuga menziesii, Tsuga heterophylla, or Pinus monticola trees. Shrubs are a common feature of the undergrowth with a combined cover exceeding 30%. Cornus nuttallii is the most abundant tall shrub or short tree that is often joined by Corylus cornuta and Acer glabrum. Shorter deciduous shrubs include Rosa gymnocarpa, Rubus parviflorus, Vaccinium membranaceum, Mahonia nervosa, and Symphoricarpos hesperius. Paxistima myrsinites and Chimaphila umbellata are common short evergreen shrubs. Graminoids are unusual. Forbs are diverse but infrequently display high cover. High constancy forbs are Linnaea borealis, Clintonia uniflora, Goodyera oblongifolia, and Trientalis borealis ssp. latifolia.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: The most similar associations are on the Gifford Pinchot National Forest (Topik 1989), although they differ in high shrub cover of Acer circinatum and the abundance of Achlys triphylla, Vancouveria hexandra, and Anemone deltoidea. A strict Pacific Northwest interpretation would include this in the Tsuga heterophylla series.

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

Physiognomy and Structure: No Data Available

Floristics: Abies grandis dominates the canopy that occasionally contains Pseudotsuga menziesii, Tsuga heterophylla, or Pinus monticola trees. Shrubs are a common feature of the undergrowth with a combined cover exceeding 30%. Cornus nuttallii is the most abundant tall shrub or short tree that is often joined by Corylus cornuta and Acer glabrum. Shorter deciduous shrubs include Rosa gymnocarpa, Rubus parviflorus, Vaccinium membranaceum, Mahonia nervosa, and Symphoricarpos hesperius. Paxistima myrsinites and Chimaphila umbellata are common short evergreen shrubs. Graminoids are unusual. Forbs are diverse but infrequently display high cover. High constancy forbs are Linnaea borealis, Clintonia uniflora, Goodyera oblongifolia, and Trientalis borealis ssp. latifolia.

Dynamics:  No Data Available

Environmental Description:  This association occurs between 884 and 1128 m (2900-3700 feet) elevation and primarily on north to east aspects.

Geographic Range: This association is currently recognized in the northern East Cascades near Mount Adams in Washington.

Nations: US

States/Provinces:  WA




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G1

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): R.C. Crawford

Author of Description: R.C. Crawford

Acknowledgements: No Data Available

Version Date: 10-17-02

  • John, T., and D. Tart. 1986. Forested plant associations of the Yakima Drainage within the Yakama Indian Reservation. Review copy prepared for the Yakama Indian Nation - BIA-SCS.
  • Quigley, T. M., and S. J. Arbelbide, technical editors. 1997. An assessment of ecosystem components in the interior Columbia Basin and portions of the Klamath and Great basins. Volume 2. Pages 337-1055 in: General Technical Report PNW-GTR-405. USDA Forest Service, Pacific Northwest Research Station, Portland, OR.
  • Topik, C. 1989. Plant associations and management guide for the Abies grandis zone Gifford Pinchot National Forest. R6-ECOL-TP-006-88. USDA Forest Service, Pacific Northwest Region, Portland, OR. 110 pp.
  • WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.