Print Report

CEGL008662 Carex filifolia - Penstemon heterodoxus Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Threadleaf Sedge - Sierra Beardtongue 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. This alpine grassland prefers open, rocky, dry habitats between 3050 and 3350 m (10,000-11,000 feet) of elevation. Aspects are generally south and west. Stands often grow on the upper margins of meadows, or just beyond the zone of seasonal soil saturation if the stand is adjacent to a lake. Soils are well-drained sands or loams. Stands of this highly diverse and open alpine grassland occur on dry sites at the upper edges of meadows. Most stands occur as patches between rock outcrops or intergrade into Pinus contorta var. murrayana or Pinus albicaulis woodlands. Carex sp. (Carex exserta, Carex filifolia) dominates the stands with 20% cover. Ninety species have been recorded in stands of this association, though none contribute much cover. The forb Penstemon heterodoxus is diagnostic, but only averages trace cover. Common graminoid associates include Achnatherum nelsonii, Juncus parryi, Carex filifolia, Poa wheeleri, Poa stebbinsii, Trisetum spicatum, and/or Elymus elymoides. Forb associates may include Eriogonum incanum, Saxifraga aprica, Cistanthe umbellata, Gayophytum humile, Lupinus lepidus, Phlox diffusa, Phyllodoce breweri, Minuartia rubella, and/or Rumex paucifolius.

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 near alpine lakes to the 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) - Penstemon heterodoxus Herbaceous Vegetation
[Provisional] (Keeler-Wolf et al. 2012)
= Carex filifolia - Penstemon heterodoxus (Sawyer et al. 2009) [45.140.08]
= Carex filifolia - Penstemon heterodoxus 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.