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Pinus jeffreyi / Ceanothus pumilus Wooded Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Pinus jeffreyi / Ceanothus pumilus Wooded Herbaceous Vegetation
Reference: Western Ecology Working Group of...
Description: This community is found in the Klamath-Siskiyou region of Oregon and California. Sites include a variety of slopes (0-45%) and all aspects except east. Elevations range from 360-1180 m (1180-3860 feet) in Oregon and 1390-1630 m (4560-5340 feet) in California. Exposed rocks and clay soils are typical with serpentine and peridotite parent material. An open overstory with a good variety of tree species, sizes, and heights over a sparsely vegetated understory is typical. Pinus jeffreyi dominates the open tree canopy with average cover of 10-25%. Calocedrus decurrens is also present and supports 5-10% cover. The dwarf-shrub layer is codominated by Ceanothus pumilus (= Ceanothus prostratus ssp. pumilus) with 8-29% cover (although due to its stature of less than 10 cm in height, it appears more like an herbaceous layer). Arctostaphylos canescens and Arctostaphylos viscida are also very abundant. The herbaceous layer is dominated by the perennial grasses, Achnatherum lemmonii (= Stipa lemmonii) and Festuca roemeri at many sites with 50% and 32% cover, respectively. Total forb cover averages 13% and is dominated by Horkelia sericata (11% cover). 
Accession Code: VB.CC.24514.PINUSJEFFREYICE
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Nov-2014
      Names:   Translated: Jeffrey Pine / Siskiyou-mat Wooded Herbaceous Vegetation
  UID: ELEMENT_GLOBAL.2.688028 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000816
  Scientific: Pinus jeffreyi / Ceanothus pumilus Wooded Herbaceous Vegetation
(convergence) and Synonyms:
(undetermined) Pinus jeffreyi / Ceanothus pumilus Wooded Herbaceous Vegetation