Report from the Calif. Exotic Pest Plant Council describes the state's efforts to eradicate the exotic tree and restore native plant communities.

Fact sheet on the invasive tree discusses its effects on native plant communities, wildlife, and the area's fire ecology. Includes photos.

Article discusses how the invasive tree's gummy blossoms can suffocate hummingbirds and other feathered fauna.

Profile of the exotic tree's characteristics, habitat, and effects on native plant and animal communities includes details on its fire ecology.