Print Report

CEGL008663 Carex filifolia - Trisetum spicatum Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Threadleaf Sedge - Narrow False Oats Grassland

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. Stands of this alpine and subalpine grassland are found between 2650 and 3500 m (8700-11,500 feet) of elevation on gentle to moderate slopes. Aspects are variable and do not seem to be diagnostic for this type. Stands are found on basin floors, lower to upper slopes. Soils are clay loams to silt loams derived from igneous or metamorphic parent materials. This subalpine to alpine meadow grassland is dominated by Carex filifolia (20% cover) and Trisetum spicatum (5% cover). Associates are highly variable, but the most constant species are the forbs Antennaria rosea and Solidago multiradiata. Graminoids, which provide trace cover, may include Danthonia intermedia, Poa secunda, Poa stebbinsii, Carex subnigricans, Carex filifolia, Carex breweri, Elymus elymoides, and/or Juncus patens. Forb associates may include Trifolium monanthum and traces of Antennaria media, Arenaria kingii, Castilleja nana, Eriogonum ovalifolium, Penstemon heterodoxus, and/or Potentilla drummondii.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Kartesz (1999) recognizes Carex exserta and Carex filifolia as separate taxa, while Jepson (Hickman 1993) maintains Carex exserta as a variety, Carex filifolia var. erostrata.

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 herbaceous association is currently only known from scattered locations in the alpine and subalpine regions east of the Sierra Crest in Yosemite National Park in California. Additional range information will be added as it becomes available.

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

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 exserta (Carex filifolia var. erostrata, Hickman 1993) - Trisetum spicatum Herbaceous Vegetation
[Provisional] (Keeler-Wolf et al. 2012)
= Carex filifolia - Trisetum spicatum (Sawyer et al. 2009) [45.140.01]
= Carex filifolia - Trisetum spicatum Herbaceous Vegetation (Keeler-Wolf 2002)

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

Author of Description: T. Keeler-Wolf et al.

Acknowledgements: No Data Available

Version Date: 05-06-10

  • Hickman, J. C. 1993. The Jepson manual: Higher plants of California. University of California Press, Ltd., Berkeley, CA. 1400 pp.
  • 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.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.