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Pacific Southwest Research Station |
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Pacific Southwest
Research Station 800 Buchanan Street Albany, CA 94710-0011 (510) 883-8830 ![]() |
Publications and Products![]() General Technical ReportTitle: A field guide to insects and diseases of California oaks Author: Swiecki, Tedmund J.; Bernhardt, Elizabeth A. Date: 2006 Source: USDA Forest Service General Technical Report PSW-GTR-197, p. 1-156 Station ID: GTR-PSW-197 Description: 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. View and Print this Publication (3.7 MB) Citation Swiecki, Tedmund J.; Bernhardt, Elizabeth A. 2006. A field guide to insects and diseases of California oaks USDA Forest Service General Technical Report PSW-GTR-197, p. 1-156. |
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