Print Report

CEGL000482 Populus balsamifera ssp. trichocarpa / Oplopanax horridus - Acer glabrum Riparian Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Black Cottonwood / Devil''s-club - Rocky Mountain Maple Riparian Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This minor streambank forest occurs in narrow, very steep valleys along perennial and ephemeral streams between 793 and 1128 m (2600-3700 feet) elevation in northeast Washington. Sites are typically cold and wet. Populus balsamifera ssp. trichocarpa dominates an open overstory occasionally with other hardwoods, such as Populus tremuloides or Betula papyrifera, but is more frequently associated with conifers Pseudotsuga menziesii or Thuja plicata with low cover. Oplopanax horridus dominates the shrub layer and may codominate with Acer glabrum var. douglasii. Either Alnus incana ssp. tenuifolia or Philadelphus lewisii may be present. Forb cover is low and is composed of species such as Streptopus amplexifolius, Viola glabella, Prosartes hookeri, or Actaea rubra. Graminoids are unusual, although Cinna latifolia is often present. Athyrium filix-femina is usually present in low cover along with other ferns.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This is not the same as ~Populus balsamifera ssp. trichocarpa / Oplopanax horridus Riparian Woodland (CEGL003284)$$ of coastal Alaska, which lacks Rocky Mountain species and has coastal species, notably Picea sitchensis.

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

Physiognomy and Structure: No Data Available

Floristics: Populus balsamifera ssp. trichocarpa dominates an open overstory occasionally with other hardwoods, such as Populus tremuloides or Betula papyrifera, but is more frequently associated with conifers Pseudotsuga menziesii or Thuja plicata with low cover. Oplopanax horridus dominates the shrub layer and may codominate with Acer glabrum var. douglasii. Either Alnus incana ssp. tenuifolia or Philadelphus lewisii may be present. Forb cover is low and is composed of species such as Streptopus amplexifolius, Viola glabella, Prosartes hookeri (= Disporum hookeri), or Actaea rubra. Graminoids are unusual, although Cinna latifolia is often present. Athyrium filix-femina is usually present in low cover along with other ferns.

Dynamics:  No Data Available

Environmental Description:  This minor streambank forest occurs in narrow, very steep valleys along perennial and ephemeral streams between 793 and 1128 m (2600-3700 feet) elevation in northeast Washington. Sites are typically cold and wet.

Geographic Range: This unusual association is presently known from northeastern Washington in the Kettle and Selkirk ranges. It may occur in adjacent British Columbia.

Nations: CA?,US

States/Provinces:  BC?, WA




Confidence Level: Low

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: = Populus trichocarpa/Oplopanax horridus (Kovalchik 2001)

Concept Author(s): R.C. Crawford

Author of Description: R.C. Crawford

Acknowledgements: No Data Available

Version Date: 10-17-02

  • Kovalchik, B. L. 2001. Classification and management of aquatic, riparian and wetland sites on the national forests of eastern Washington. Part 1: The series descriptions. 429 pp. plus appendix. [http://www.reo.gov/col/wetland_classification/wetland_classification.pdf]
  • Kovalchik, Bud L. Personal communication. U.S. Forest Service riparian ecologist, retired. Colville, WA.
  • Mackenzie, Will. Personal communication. British Columbia Ministry of Forestry Wetlands & Riparian Specialist, Smithers, BC, Canada.
  • 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.