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CEGL003140 Carex spectabilis - Sibbaldia procumbens Alpine Meadow

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Showy Sedge - Creeping Sibbaldia Alpine Meadow

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This herbaceous association is currently only 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 alpine herbaceous vegetation grows at about 3200 m (10,500 feet) of elevation on moderate to steep slopes near seeps. Aspects are generally south, and substrates are seasonally saturated silt loams derived from granitic or metamorphic parent materials. This is a well-drained community that occurs on stony and/or bouldery slopes often in small patches at the base of outcrops. This alpine grassland is heavily dominated by Carex spectabilis. No other graminoid or forb species achieves more than 1% cover, though 55 species have been recorded on plots of this type. Graminoids with high constancy include Poa secunda, Calamagrostis breweri, Trisetum spicatum, and various Poa, Juncus, and Elymus species. The forb Sibbaldia procumbens is diagnostic but attains only 0.3% cover and 70% constancy. Similar cover and constancy values are attained by the forbs Penstemon heterodoxus, Polygonum bistortoides, Rumex paucifolius, and Potentilla spp.

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: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This association is only known from the vicinity of Yosemite. Information about its global range is not available without additional inventory. Both nominal species range widely in alpine and boreal North America.

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Carex spectabilis - Sibbaldia procumbens (Sawyer et al. 2009) [45.155.01]
= Carex spectabilis - Sibbaldia procumbens Herbaceous Vegetation (Keeler-Wolf 2002)
= Carex spectabilis-Sibbaldia procumbens Herbaceous Vegetation (Keeler-Wolf et al. 2012)

Concept Author(s): T. Keeler-Wolf (2002)

Author of Description: T. Keeler-Wolf

Acknowledgements: No Data Available

Version Date: 05-06-10

  • Keeler-Wolf, T. 2002. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. NatureServe in cooperation with the California Native Plant Society and California Natural Heritage Program, Wildlife and Habitat Data Analysis Branch, California Department of Fish and Game, Sacramento, CA. August 2002.
  • 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.
  • 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.
  • Taylor, D. W. 1984. Vegetation of the Harvey Monroe Hall Research Natural Area, Inyo National Forest, California. Unpublished report. USDA Forest Service, Pacific Southwest Research Station, Berkeley, CA.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.