Print Report
CEGL001448 Eriogonum sphaerocephalum / Poa secunda Dwarf-shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Rock Buckwheat / Sandberg Bluegrass Dwarf-shrub Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This plant association is described for the Columbia Plateau of southeastern Washington and northeastern Oregon. Stands are also known from the upper Hells Canyon in Idaho. The association occurs on basalt Lithosol sites ranging in elevation from 488 to 945 m (1600-3100 feet) on the Columbia Plateau and 1067 to 1372 m (3500-4500 feet) in the upper Hells Canyon region. The association is characterized by an open dwarf-shrub canopy dominated by Eriogonum sphaerocephalum. The relatively sparse understory is dominated by Poa secunda; Eriogonum thymoides may also be present. Pseudoroegneria spicata and Elymus elymoides are commonly present with low abundance. Forb composition is variable. Trifolium macrocephalum, Balsamorhiza hookeri, Lomatium bicolor var. leptocarpum, and Allium acuminatum are often present.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The association is characterized by an open dwarf-shrub canopy dominated by Eriogonum sphaerocephalum. The relatively sparse understory is dominated by Poa secunda; Eriogonum thymoides may also be present. Pseudoroegneria spicata and Elymus elymoides are commonly present with low abundance. Forb composition is variable. Trifolium macrocephalum, Balsamorhiza hookeri, Lomatium bicolor var. leptocarpum (= Lomatium leptocarpum), and Allium acuminatum are often present.
Dynamics: No Data Available
Environmental Description: The association occurs on basalt Lithosol sites ranging in elevation from 488 to 945 m (1600-3100 feet) on the Columbia Plateau and 1067 to 1372 m (3500-4500 feet) in the upper Hells Canyon region.
Geographic Range: The association is known from only southeastern Washington and west-central Idaho, and adjacent areas of Oregon.
Nations: US
States/Provinces: ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688381
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.2 Little Sagebrush - Black Sagebrush - Scabland Sagebrush Steppe & Shrubland Macrogroup | M170 | 3.B.1.Ne.2 |
| Group | 3.B.1.Ne.2.a Scabland Sagebrush - Buckwheat species Dwarf-shrubland & Steppe Group | G307 | 3.B.1.Ne.2.a |
| Alliance | A1568 Buckwheat species / Sandberg Bluegrass Dwarf-shrub Steppe Alliance | A1568 | 3.B.1.Ne.2.a |
| Association | CEGL001448 Rock Buckwheat / Sandberg Bluegrass Dwarf-shrub Grassland | CEGL001448 | 3.B.1.Ne.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Eriogonum sphaerocephalum - Poa secunda Habitat Type (Daubenmire 1970)
- 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.
- Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.
- Daubenmire, R. F., and J. B. Daubenmire. 1968. Forest vegetation of eastern Washington and northern Idaho. Washington State University Agricultural Experiment Station Technical Bulletin No. 60. 104 pp.
- IDCDC [Idaho Conservation Data Center]. No date. Unpublished data on file at Idaho Conservation Data Center, Department of Fish and Game, Boise, ID.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 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.