A field guide to insects and diseases of California oaks

Tedmund J. Swiecki; Elizabeth A. Bernhardt

doi:10.2737/PSW-GTR-197

Treesearch

A field guide to insects and diseases of California oaks

Informally Refereed

Authors:

Tedmund J. Swiecki, Elizabeth A. Bernhardt

Year:

2006

Type:

General Technical Report

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.2737/PSW-GTR-197

Source:

Gen. Tech Rep. PSW-GTR-197. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 151 p.

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Download (PDF 3.91 MB): https://research.fs.usda.gov/download/treesearch/25928.pdf

Abstract

California has more than twenty-five native species, natural hybrids, and varieties of oaks (Quercus species). The form of these oaks ranges from large trees, up to about 25 m tall, to shrubs no taller than about 1.5 m. California's native oaks include representatives of three oak subgroups or subgenera (Table 1). Hybridization only occurs between oaks in the same subgroup. In addition, some insects, pathogens, and other agents may selectively colonize or damage oaks in certain subgroups.

Citation

Swiecki, Tedmund J.; Bernhardt, Elizabeth. 2006. A field guide to insects and diseases of California oaks. Gen. Tech Rep. PSW-GTR-197. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 151 p.