Pacific Southwest

Title: A field guide to insects and diseases of California oaks

Author: Swiecki, Tedmund J.; Bernhardt, Elizabeth A.

Date: 2006

Source: In: USDA Forest Service General Technical Report PSW-GTR-197, p. 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.

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Citation

Swiecki, Tedmund J.; Bernhardt, Elizabeth A.  2006.  A field guide to insects and diseases of California oaks.   In: USDA Forest Service General Technical Report PSW-GTR-197, p. 156.