Print Report
CEGL001673 Pseudoroegneria spicata - Opuntia polyacantha - (Poa secunda) Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Bluebunch Wheatgrass - Plains Prickly-pear - (Sandberg Bluegrass) Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This plant association is described from sites within the Hells Canyon region of the Blue Mountains ecoregional section. The association occurs on the harshest sites occupied by Pseudoroegneria spicata-dominated plant communities. These are moderately steep to steep, south-southeast- to south-southwest-facing, mid to upper slopes. Stands may occur as low as 245 m (800 feet) elevation but are more typical at 550-1130 m (1800-3700 feet) elevation. Stands are typically open, with well-spaced Pseudoroegneria spicata bunches. Opuntia polyacantha, Erigeron pumilus, and Scutellaria angustifolia are principal forb species. Exotics Bromus tectorum and Bromus arvensis are often present.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: The vegetation is described as Agropyron spicatum - Poa secunda / Opuntia polyacantha by Johnson and Simon (1987). Tisdale (1986) identified the vegetation as Agropyron spicatum / Opuntia polyacantha. The two classification units are identical in composition and function.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Stands are typically open, with well-spaced Pseudoroegneria spicata bunches. Opuntia polyacantha, Erigeron pumilus, and Scutellaria angustifolia are principal forb species. Bromus tectorum and Bromus arvensis (= Bromus japonicus) are often present.
Dynamics: No Data Available
Environmental Description: The association occurs on the harshest sites occupied by Pseudoroegneria spicata-dominated plant communities. These are moderately steep to steep, south-southeast- to south-southwest-facing, mid to upper slopes. Stands may occur as low as 245 m (800 feet) elevation but are more typical at 550-1130 m (1800-3700 feet) elevation.
Geographic Range: The plant association is described by Johnson and Simon (1987) and Tisdale (1986) from sites within the Hells Canyon region of the Blue Mountains ecoregional section. Stands are evenly distributed throughout the range.
Nations: US
States/Provinces: ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689730
Confidence Level: Low - Poorly Documented
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.1 Yellow Rabbitbrush - Blackbrush / Indian Ricegrass Dry Shrubland & Grassland Macrogroup | M171 | 3.B.1.Ne.1 |
| Group | 3.B.1.Ne.1.c James'' Galleta - Indian Ricegrass - Needle-and-Thread Semi-Desert Grassland Group | G311 | 3.B.1.Ne.1.c |
| Alliance | A3976 Bluebunch Wheatgrass - Plains Prickly-pear Dry Canyon Slope Grassland Alliance | A3976 | 3.B.1.Ne.1.c |
| Association | CEGL001673 Bluebunch Wheatgrass - Plains Prickly-pear - (Sandberg Bluegrass) Grassland | CEGL001673 | 3.B.1.Ne.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Agropyron spicatum - Poa secunda / Opuntia polyacantha Association (Johnson and Simon 1987)
= Agropyron spicatum / Opuntia polyacantha (Tisdale 1986)
= Agropyron spicatum / Opuntia polyacantha (Tisdale 1986)
- 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.
- Johnson, C. G., Jr., and S. A. Simon. 1987. Plant associations of the Wallowa-Snake Province Wallowa-Whitman National Forest. Technical Paper R6-ECOL-TP-255A-86. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 399 pp. plus appendices.
- Johnson, C. G., and S. A. Simon. 1985. Plant associations of the Wallowa Valley Ranger District, Part II: Steppe. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 258 pp.
- 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.
- Tisdale, E. W. 1979. A preliminary classification of Snake River Canyon grasslands in Idaho. Forestry, Wildlife, and Range Experiment Station Bulletin No. 32, University of Idaho, Moscow. 8 pp.
- Tisdale, E. W. 1986. Canyon grasslands and associated shrublands of west-central Idaho and adjacent areas. Bulletin No. 40. Forest, Wildlife and Range Experiment Station, University of Idaho, Moscow. 42 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.