Print Report

CEGL002375 Pinus edulis - Juniperus osteosperma / Cushion Plant Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Cushion Plant Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland association has only been described from Capitol Reef National Park in southern Utah and may be confined to the immediate area because of the narrow suite of sensitive herbaceous species that defines the community. This summary is derived from plot data collected in the park in 1987 and 1988. The association occurs on high slopes; sites slope gently to the north between 2073 and 2195 m elevation. Parent materials include a variety of sedimentary rocks, giving rise to coarse-textured, rapidly drained soils that often have a surface cap of fine gravel. Total vegetation cover rarely exceeds 50%. The Pinus edulis and Juniperus osteosperma canopy ranges between 15 and 35% cover. Juniperus osteosperma is absent from one stand. The understory is often technically sparse in cover; there is no developed shrub layer, but there are generally scattered individuals of Artemisia bigelovii, Eriogonum microthecum, Gutierrezia sarothrae, Opuntia polyacantha, and Shepherdia rotundifolia present. The herbaceous layer is diverse in terms of species composition but provides sparse to low cover. Forbs, particularly sensitive cushion plants, define this community and include Arenaria eastwoodiae, Enceliopsis nudicaulis, Erigeron compactus, Erigeron pumilus, Eriogonum alatum, Frasera albomarginata, Heterotheca villosa, Hymenopappus filifolius, Paronychia sessiliflora, Polygala subspinosa, Stenotus armerioides, Tetraneuris acaulis, Tetraneuris torreyana, Townsendia aprica, and Townsendia incana. Graminoids include occasional tufts of Achnatherum hymenoides and Aristida purpurea.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association has only been described from Capitol Reef National Park. Until further inventory is completed, there is no global information.

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

Physiognomy and Structure: No Data Available

Floristics: Total vegetation cover rarely exceeds 50%. The Pinus edulis and Juniperus osteosperma canopy ranges between 15 and 35% cover. Juniperus osteosperma is absent from one stand. The understory is often technically sparse in cover; there is no developed shrub layer, but there are generally scattered individuals of Artemisia bigelovii, Eriogonum microthecum, Gutierrezia sarothrae, Opuntia polyacantha, and Shepherdia rotundifolia present. The herbaceous layer is diverse in terms of species composition but provides sparse to low cover. Forbs, particularly sensitive cushion plants, define this community and include Arenaria eastwoodiae, Enceliopsis nudicaulis, Erigeron compactus, Erigeron pumilus, Eriogonum alatum, Frasera albomarginata, Heterotheca villosa, Hymenopappus filifolius, Paronychia sessiliflora, Polygala subspinosa, Stenotus armerioides, Tetraneuris acaulis, Tetraneuris torreyana (= Tetraneuris depressa), Townsendia aprica, and Townsendia incana. Graminoids include occasional tufts of Achnatherum hymenoides and Aristida purpurea.

Dynamics:  This association has only been described from Capitol Reef National Park. Until further inventory is completed, there is no global information.

Environmental Description:  The association occurs on high slopes; sites slope gently to the north between 2073 and 2195 m elevation. Parent materials include a variety of sedimentary rocks, giving rise to coarse-textured, rapidly drained soils that often have a surface cap of fine gravel.

Geographic Range: This association has only been described from Capitol Reef National Park in southern Utah and may be confined there because of the limited suite of rare herbaceous species that define the type.

Nations: US

States/Provinces:  UT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Pinus edulis - Juniperus osteosperma / Cushion Plant Woodland (Clark et al. 2009)

Concept Author(s): Clark et al. (2009)

Author of Description: J. Coles

Acknowledgements: No Data Available

Version Date: 11-02-05

  • Clark, D., M. Dela Cruz, T. Clark, J. Coles, S. Topp, A. Evenden, A. Wight, G. Wakefield, and J. Von Loh. 2009. Vegetation classification and mapping project report, Capitol Reef National Park. Natural Resource Report NPS/NCPN/NRTR--2009/187. National Park Service, Fort Collins, CO. 882 pp.
  • Romme, W. H., K. D. Heil, J. M. Porter, and R. Fleming. 1993. Plant communities of Capitol Reef National Park, Utah. USDI National Park Service, Technical Report NPS/NAUCARE/NRTER-93/02. Cooperative Park Studies Unit, Northern Arizona University. 37 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.