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CEGL001085 Celtis laevigata var. reticulata / Pseudoroegneria spicata Wet Scrub
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Netleaf Hackberry / Bluebunch Wheatgrass Wet Scrub
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This minor woodland association is described from deep canyon bottoms of the Snake and Salmon rivers in Oregon, Washington and Idaho, and possibly occurs in similar habitats in California. These woodlands occur as numerous relatively small stands, dispersed and clustered in valley bottoms along riparian margins, on lower slopes of river terraces near seepage lines, and on scree slopes. Aspects are often southerly, especially at higher elevations. Soils are poorly developed and derived from alluvium and colluvium with bedrock outcrops. Vegetation characteristic of this association typically is an open canopy (36% mean cover) of the small cold-deciduous tree Celtis laevigata var. reticulata. On less favorable sites with shallow rocky soils the trees are shorter and bushier, and the stands resemble tall shrublands. The herbaceous layer is dominated by the perennial bunchgrass Pseudoroegneria spicata. Poa secunda and Aristida purpurea var. longiseta are often present also. Other common species include Erigeron pumilus, Heterotheca villosa, Achillea millefolium, and Scutellaria angustifolia. Ground cover often has significant cover (up to 50%) of rock, lichen and/or litter. Most described stands have been disturbed and have significant cover of introduced annual grasses, including Bromus tectorum, Bromus arvensis, Bromus sterilis, and introduced forbs Hypericum perforatum, Verbascum spp. and Melilotus officinalis. Diagnostic of this woodland association is the open Celtis laevigata var. reticulata tree canopy with Pseudoroegneria spicata present in the herbaceous layer.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Most stands reported are highly disturbed and in poor condition (Neiman 1987, Mancuso and Moseley 1994). Daubenmire (1970) described a Celtis laevigata var. reticulata / Bromus tectorum shrubland in Washington, which is likely the same, but more disturbed.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Vegetation characteristic of this association typically is an open canopy (36% mean cover) of the small cold-deciduous tree Celtis laevigata var. reticulata. On less favorable sites with shallow rocky soils the trees are shorter and bushier, and the stands resemble tall shrublands. The herbaceous layer is dominated by the perennial bunchgrass Pseudoroegneria spicata. Poa secunda and Aristida purpurea var. longiseta are often present also. Other common species include Erigeron pumilus, Heterotheca villosa, Achillea millefolium, and Scutellaria angustifolia. Ground cover often has significant cover (up to 50%) of rock, lichen and/or litter. Most described stands have been disturbed and have significant cover of introduced annual grasses, including Bromus tectorum, Bromus arvensis (= Bromus japonicus), Bromus sterilis, and introduced forbs Hypericum perforatum, Verbascum spp. and Melilotus officinalis. Diagnostic of this woodland association is the open Celtis laevigata var. reticulata tree canopy with Pseudoroegneria spicata present in the herbaceous layer.
Dynamics: No Data Available
Environmental Description: These woodlands occur as numerous relatively small stands, dispersed and clustered in valley bottoms along riparian margins, on lower slopes of river terraces near seepage lines, and on scree slopes. Aspects are often southerly, especially at higher elevations. Soils are poorly developed and derived from alluvium and colluvium with bedrock outcrops.
Geographic Range: The association occurs within the western region of the Blue Mountains ecoregional section, in the canyon bottoms of the Snake and Salmon rivers.
Nations: US
States/Provinces: CA?, CO, ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683536
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation | F013 | 2.C.4 |
| Division | 2.C.4.Nb Western North American Temperate Freshwater Marsh, Wet Meadow & Shrubland Division | D031 | 2.C.4.Nb |
| Macrogroup | 2.C.4.Nb.5 Sitka Alder - Booth''s Willow / Northwest Territory Sedge Montane Marsh, Wet Meadow & Shrubland Macrogroup | M893 | 2.C.4.Nb.5 |
| Group | 2.C.4.Nb.5.d Willow species - Alder species - Water Birch Riparian & Seep Shrubland Group | G527 | 2.C.4.Nb.5.d |
| Alliance | A3973 Netleaf Hackberry / Lewis'' Mock Orange Wet Scrub Alliance | A3973 | 2.C.4.Nb.5.d |
| Association | CEGL001085 Netleaf Hackberry / Bluebunch Wheatgrass Wet Scrub | CEGL001085 | 2.C.4.Nb.5.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Celtis laevigata var. reticulata / Bromus tectorum shrubland (Daubenmire 1970) [likely the same, but more disturbed.]
= Celtis reticulata / Agropyron spicatum Habitat Type (Tisdale 1986)
= Celtis reticulata / Agropyron spicatum Plant Association (Johnson and Simon 1987)
= Celtis reticulata / Agropyron spicatum Habitat Type (Tisdale 1986)
= Celtis reticulata / Agropyron spicatum Plant Association (Johnson and Simon 1987)
- 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.
- CNHP [Colorado Natural Heritage Program]. 2006-2017. Tracked natural plant communities. Colorado Natural Heritage Program, Colorado State University, Fort Collins. [https://cnhp.colostate.edu/ourdata/trackinglist/plant_communities/]
- Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.
- 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.
- Johnston, B. C. 1987. Plant associations of Region Two: Potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas. R2-ECOL-87-2. USDA Forest Service, Rocky Mountain Region. Lakewood, CO. 429 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.
- Mancuso, M., and R. Moseley. 1994. Vegetation description, rare plant inventory, and vegetation monitoring for Craig Mountain, Idaho. Unpublished report prepared for Bonneville Power Administration. 146 pp.
- Neiman, K. 1987. Inventory of Garden Creek Ranch conducted during summer of 1987. Report to The Nature Conservancy, Sun Valley, Idaho.
- 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.