Fagaceae

Lore & Background

Introduced diseases have caused declines in Fagaceae populations. Chestnut Blight has affected Castanea species in North America and Europe, killing saplings before they can reproduce. Sudden Oak Death has caused declines in Quercus and Lithocarpus species in coastal California and Oregon. Temperate species are often wind pollinated, while tropical trees are often insect pollinated. Acorns are eaten and dispersed by mammals and birds.

Reader's Guide

The Fagaceae are ecologically and economically significant across the Northern Hemisphere. Oaks form the backbone of temperate forests in North America, Europe, and Asia, providing critical wildlife food and habitat. The family's wood, bark, nuts, and aesthetic value are economically valuable: oak timber is used for flooring and railroad slats, beech lumber for furniture and charcoal, and chestnut wood for leather tanning. Cork from Quercus suber is used for wine bottle stoppers. Traditional uses include treating diarrhea, skin conditions, and inflammation with various species. The family's monophyly is strongly supported by morphological and molecular data. Introduced diseases like Chestnut Blight and Sudden Oak Death have caused population declines, altering forest ecosystems. The family's diversity is concentrated in Southeast Asia, where most extant genera are thought to have evolved before migrating to Europe and North America via the Bering Land Bridge.

Did You Know?

• The Fagaceae family includes eight genera with around 1,000 or more species.
• The Southern Hemisphere genus Nothofagus was historically placed in Fagaceae but is now treated in its own family, Nothofagaceae.
• Chestnut Blight has caused population declines in Castanea species in North America and Europe.