Print Report

CEGL008636 Pinus sabiniana - Quercus wislizeni / Arctostaphylos viscida Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: California Foothill Pine - Interior Live Oak / Sticky Whiteleaf Manzanita Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland 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 woodland are found at xeric sites at low elevations (550-1370 m [1800-4500 feet]) on the low to upper portions of southwest- to north-facing slopes at higher elevations. Slopes are convex-, concave- and linear-shaped and vary from gentle to steep. Soils tend to be poorly developed and rocky in places with textures ranging from loamy sand to clay loam and of metamorphic and igneous, granitic parent material. Litter ranges from 60-75% cover. Fire is common and can cover extensive areas. Impact from the invasion of exotic species can be high. This association forms an open to intermittent tree layer dominated by Pinus sabiniana and Quercus wislizeni with an intermittent understory shrub layer dominated by Arctostaphylos viscida. Other species contributing to minor cover varies and may include Toxicodendron diversilobum, Aira caryophyllea, Bromus hordeaceus, Bromus diandrus, Cercis canadensis var. texensis, Eriodictyon californicum, lichen, moss, Rhamnus ilicifolia, Rhus trilobata, Cheilanthes gracillima, and Ceanothus cuneatus. Ceanothus fresnensis is a rare species that may occur within this association. The stands are usually relatively open, but are variable, and may range from a woodland condition to a sparsely wooded herbaceous or shrubland condition.

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: This association forms an open to intermittent tree layer dominated by Pinus sabiniana and Quercus wislizeni with an intermittent understory shrub layer dominated by Arctostaphylos viscida. Other species contributing to minor cover varies and may include Toxicodendron diversilobum, Aira caryophyllea, Bromus hordeaceus, Bromus diandrus, Cercis canadensis var. texensis, Eriodictyon californicum, lichen, moss, Rhamnus ilicifolia (= Rhamnus crocea ssp. ilicifolia), Rhus trilobata, Cheilanthes gracillima, and Ceanothus cuneatus. Ceanothus fresnensis is a rare species that may occur within this association. The stands are usually relatively open, but are variable, and may range from a woodland condition to a sparsely wooded herbaceous or shrubland condition.

Dynamics:  Fire is common and can cover extensive areas. Impact from the invasion of exotic species can be high.

Environmental Description:  Stands of this woodland are found at xeric sites at low elevations (550-1370 m [1800-4500 feet]) on the low to upper portions of southwest- to north-facing slopes at higher elevations. Slopes are convex-, concave- and linear-shaped and vary from gentle to steep. Soils tend to be poorly developed and rocky in places with textures ranging from loamy sand to clay loam and of metamorphic and igneous, granitic parent material. Litter ranges from 60-75% cover.

Geographic Range: This woodland association is currently only known from 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: 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: = Pinus sabiniana - Quercus chrysolepis / Arctostaphylos viscida (Sawyer et al. 2009) [87.130.12]
= Pinus sabiniana - Quercus wislizeni / Arctostaphylos viscida Woodland (Keeler-Wolf 2002)
= Pinus sabiniana - Quercus wislizeni/Arctostaphylos viscida Woodland [Provisional] (Keeler-Wolf et al. 2012)

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

Author of Description: S. San

Acknowledgements: No Data Available

Version Date: 05-06-10

  • Allen, B. H., R. R. Everet, and B. A. Holzman. 1991. A classification system for California''s hardwood rangelands. Hilgardia 59:1-45.
  • CNDDB [California Natural Diversity Data Base]. No date. Unpublished data files. California Natural Diversity Data Base, California Natural Heritage Division, Sacramento.
  • 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.