Picea Breweriana Tree Information

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Images of Picea Breweriana:

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Picea Breweriana grows in the following 2 states and provinces:

California, Oregon

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Information about Picea Breweriana:

The Picea Breweriana is commonly known as the Brewer Spruce as well as Weeping Spruce.

The currently accepted scientific name of Brewer spruce is Picea breweriana Wats. . There are no recognized subspecies or varieties. Brewer spruce grows adjacent to Engelmann spruce (Picea engelmannii), but no hybridization between the two has been observed .

Brewer spruce is endemic to the Klamath region of northwestern California and adjacent Oregon. It is distributed from from Del Norte, Trinity, and Siskiyou counties in California to Curry and Josephine counties in Oregon . The best developed stands are located on high ridges and upper valleys of the Klamath, Shasta-Trinity, and Six Rivers National Forests of California and in the Siskiyou and Rogue River National Forests of Oregon .

Although Brewer spruce grows throughout the Klamath region, it usually occurs in local, disjunct populations . It is a minor component of a variety of communities . In some areas, Brewer spruce is a minor climax species in stands dominated by California red fir (Abies magnifica), white fir (A. concolor), or mountain hemlock (Tsuga mertenmsiana) . It occurs occasionally as a codominant in some California red fir and western hemlock habitat types. Near the Russian Peak area of the Marble Mountains of California, Brewer spruce is a major component of the California red fir/northern twinflower (Linnaea borealis) and California ref fir/huckleberry oak (Quercus vaccinifolia) types . This species also occurs in small dense stands on mostly north-facing slopes, as individuals invading seral pine stands and montane chaparral, and as scattered individuals in closed white fir forests . Brewer spruce is often an indicator of cold and wet environments . Brewer spruce is listed as a dominant or codominant overstory species in the following published classification: Preliminary plant associations of the Siskiyou Mountain Province .

Some of the information provided here is attributed to:Cope, Amy B. 1992. Picea breweriana. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). , available at the USDA Fire Effects Information System (FEIS) website