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CEGL001989 Senecio triangularis - Veratrum californicum Wet Meadow

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Arrowleaf Ragwort - California False Hellebore Wet Meadow

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This herbaceous association is currently known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association occurs between 2255 and 3050 m (7400-10,000 feet) in elevation on gentle to moderate slopes, and is often found along streams. Aspects are commonly northern and eastern. Soil parent materials are varied. Soil textures range from silt loams to muck, and are moderately well-drained to poorly drained. Sites are palustrine, being seasonally or intermittently flooded. This association is characterized by a high cover of herbaceous wet meadow species, with no tree cover. Shrub cover is open, including Salix lasiolepis and Cornus sericea ssp. sericea, although more commonly there are no shrubs. Veratrum californicum, Lupinus latifolius, Senecio triangularis, Epilobium ciliatum, and Glyceria striata are the most frequent herbaceous species, while Senecio integerrimus, Senecio triangularis, Veratrum californicum, Lupinus latifolius, and Allium validum have the highest cover.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association has been considered part of the Senecio triangularis alliance by Manning and Padgett (1991). Their description suggests that Senecio triangularis is the dominant species. However, locally Veratrum is dominant. Regardless of which alliance it is placed in, this is most likely a single association.

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

Physiognomy and Structure: No Data Available

Floristics: This association is characterized by a high cover of herbaceous wet meadow species, with no tree cover. Shrub cover is open, including Salix lasiolepis and Cornus sericea ssp. sericea, although more commonly there are no shrubs. Veratrum californicum, Lupinus latifolius, Senecio triangularis, Epilobium ciliatum, and Glyceria striata (= Glyceria elata) are the most frequent herbaceous species, while Senecio integerrimus, Senecio triangularis, Veratrum californicum, Lupinus latifolius, and Allium validum have the highest cover.

Dynamics:  No Data Available

Environmental Description:  This association occurs between 2255 and 3050 m (7400-10,000 feet) in elevation on gentle to moderate slopes, and is often found along streams. Aspects are commonly northern and eastern. Soil parent materials are varied. Soil textures range from silt loams to muck, and are moderately well-drained to poorly drained. Sites are palustrine, being seasonally or intermittently flooded.

Geographic Range: This association has been described from Yosemite National Park, the Lake Tahoe region of California, Oregon, and western Nevada (Manning and Padgett 1991). Information about its global characteristics is not available without additional inventory.

Nations: US

States/Provinces:  CA, OR




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G4

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Veratrum californicum - Senecio triangularis (Sawyer et al. 2009) [45.423.01]
= Veratrum californicum - Senecio triangularis Herbaceous Vegetation (Keeler-Wolf et al. 2012)
? California falsehellebore community type (Kovalchik 1987) [(p.138)]

Concept Author(s): T. Keeler-Wolf et al. (2012)

Author of Description: T. Keeler-Wolf

Acknowledgements: No Data Available

Version Date: 05-06-10

  • 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.
  • Hemstrom, M. A., S. E. Logan, and W. Pavlat. 1987. Plant association and management guide, Willamette National Forest. Report R6-Ecol 257-B-86. USDA Forest Service, Pacific Northwest Region, Portland, OR. 312 pp.
  • Keeler-Wolf, T., M. Schindel, S. San, P. Moore, and D. Hickson. 2003a. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. Unpublished report by NatureServe in cooperation with the California Native Plant Society and California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, CA.
  • Keeler-Wolf, T., P. E. Moore, E. T. Reyes, J. M. Menke, D. N. Johnson, and D. L. Karavidas. 2012. Yosemite National Park vegetation classification and mapping project report. Natural Resource Technical Report NPS/YOSE/NRTR--2012/598. National Park Service, Fort Collins, CO.
  • Kovalchik, B. L. 1987. Riparian zone associations - Deschutes, Ochoco, Fremont, and Winema national forests. Technical Paper 279-87. USDA Forest Service, Pacific Northwest Region, Portland, OR. 171 pp.
  • Manning, M. E., and W. G. Padgett. 1991. Riparian community type classification for the Humboldt and Toiyabe national forests, Nevada and eastern California. Unpublished draft report prepared for USDA Forest Service, Intermountain Region Ecology and Classification Program, Ogden, UT. 490 pp.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.