Print Report
A2625 Eryngium petiolatum Vernal Pool Alliance
Type Concept Sentence: This alliance covers vernal pools dominated by Eryngium petiolatum, Grindelia nana, and/or Lasthenia glaberrima. Vernal pools are seasonally flooded depressional wetlands that dry up completely by the end of the season or sooner and may not be wetted for several years. They occur among grasslands and open woodlands of the Willamette Valley of Oregon and southern Washington.
Common (Translated Scientific) Name: Rushleaf Eryngo Vernal Pool Alliance
Colloquial Name: Willamette Valley Vernal Pool
Hierarchy Level: Alliance
Type Concept: This alliance covers vernal pools dominated by Eryngium petiolatum, Grindelia nana, and/or Lasthenia glaberrima. Several other herbaceous species occur as well. Vernal pools are seasonally flooded depressional wetlands that dry up completely by the end of the season or sooner and may not be wetted for several years. They occur among grasslands and open woodlands of the Willamette Valley of Oregon and southern Washington.
Diagnostic Characteristics: Herbaceous wetlands dominated by Eryngium petiolatum.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Vernal pools of the Willamette Valley share very little flora in common with California vernal pools.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: Perennial and annual herbaceous forb-dominated vegetation that is <1 m in height.
Floristics: These vernal pools are dominated by Eryngium petiolatum, Grindelia nana, and/or Lasthenia glaberrima. Several other herbaceous species occur as well.
Dynamics: No Data Available
Environmental Description: These seasonally flooded depressional wetlands dry up completely by the end of the season or sooner and may not be wetted for several years. Waters are fresh but may become increasingly alkaline as they dry up. They occur on a clay pan that impedes drainage.
Geographic Range: This alliance occurs in the Willamette Valley of Oregon and southern Washington.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899213
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: GNR
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.3 Winged Water-starwort - Elegant Calicoflower - California Eryngo Western North American Vernal Pool Macrogroup | M074 | 2.C.4.Nb.3 |
| Group | 2.C.4.Nb.3.b Calicoflower species - Water-starwort species - Eryngo species North Pacific Vernal Pool Group | G529 | 2.C.4.Nb.3.b |
| Alliance | A2625 Rushleaf Eryngo Vernal Pool Alliance | A2625 | 2.C.4.Nb.3.b |
| Association | CEGL003345 Rushleaf Eryngo - Idaho Gumweed Vernal Pool | CEGL003345 | 2.C.4.Nb.3.b |
| Association | CEGL003458 Rushleaf Eryngo - Smooth Goldfields Vernal Pool | CEGL003458 | 2.C.4.Nb.3.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Alverson, E. R. 1987. Unpublished vegetation data: Monroe vernal pool. The Nature Conservancy, Oregon Field Office, Portland. 2 pp.
- Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
- Lippert, B. E., and D. L. Jameson. 1964. Plant succession in temporary ponds of the Willamette Valley, Oregon. American Midland Naturalist 71:181-197.