Print Report

CEGL000952 Larix lyallii / Vaccinium deliciosum Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Subalpine Larch / Cascade Bilberry Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: In the high Cascades of Washington, from the Stuart Range north, this association occurs mostly between the upper Chelan drainage to Mount Stuart. This may best be described as a parkland landscape often located near wetlands. It has a very open tree canopy usually with less than 25% cover. Larix lyallii is always present and often accompanied by Abies lasiocarpa, Picea engelmannii, Pinus albicaulis, or Tsuga mertensiana. Dwarf-shrubs dominate the ground cover, typically with less than 50% total cover. Vaccinium deliciosum and Cassiope mertensiana are always present, often with Phyllodoce empetriformis, Luetkea pectinata, or Vaccinium scoparium. Graminoids, such as Luzula glabrata var. hitchcockii, Carex nigricans, or Vahlodea atropurpurea, commonly appear among the short shrubs.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This is called Larix lyallii / Vaccinium deliciosum - Cassiope mertensiana in Lillybridge et al. (1995). A broader, more variable type was described in a draft document (Williams and Smith 1990) as Larix lyallii / Vaccinium deliciosum. Lillybridge et al. (1995) describe four other Larix lyallii associations.

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

Physiognomy and Structure: No Data Available

Floristics: This may best be described as a parkland landscape often located near wetlands. It has a very open tree canopy usually with less than 25% cover. Larix lyallii is always present and often accompanied by Abies lasiocarpa, Picea engelmannii, Pinus albicaulis, or Tsuga mertensiana. Dwarf-shrubs dominate the ground cover, typically with less than 50% total cover. Vaccinium deliciosum and Cassiope mertensiana are always present, often with Phyllodoce empetriformis, Luetkea pectinata, or Vaccinium scoparium. Graminoids, such as Luzula glabrata var. hitchcockii (= Luzula hitchcockii), Carex nigricans, or Vahlodea atropurpurea (= Deschampsia atropurpurea), commonly appear among the short shrubs.

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This association is found in the high northeast Cascades of Washington from the Stuart Range north. Lillybridge (pers. comm.) says it is mostly between the upper Chelan to Mount Stuart.

Nations: US

States/Provinces:  WA




Confidence Level: Low - Poorly Documented

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: = Larix lyallii / Vaccinium deliciosum - Cassiope mertensiana (Lillybridge et al. 1995) [LALY/VADE-CAME ASSOCIATION CAC114]
< Larix lyallii / Vaccinium deliciosum (Williams and Smith 1990)
= Larix lyallii/Vaccinium deliciosum Woodland (Crawford et al. 2009)

Concept Author(s): R.C. Crawford

Author of Description: R.C. Crawford

Acknowledgements: No Data Available

Version Date: 11-26-97

  • 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.
  • Crawford, R. C., C. B. Chappell, C. C. Thompson, and F. J. Rocchio. 2009. Vegetation classification of Mount Rainier, North Cascades, and Olympic national parks. Plant association descriptions and identification keys: Appendices A-G. Natural Resource Technical Report NPS/NCCN/NRTR--2009/D-586. National Park Service, Fort Collins, CO. 586 pp.
  • Lillybridge, T. R., B. L. Kovalchik, C. K. Williams, and B. G. Smith. 1995. Field guide for forested plant associations of the Wenatchee National Forest. General Technical Report PNW-GTR-359. USDA Forest Service, Pacific Northwest Research Station, Portland, OR. 335 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.
  • Williams, C. K., and B. G. Smith. 1990. Forested plant associations of the Wenatchee National Forest. Unpublished draft prepared by the USDA Forest Service, Pacific Northwest Region, Portland, OR. 217 pp.