Umbellularia califomica (California-Laurel)
- Native range, associated forest cover, supporting soils, and detailed facts on life history. Includes distribution map.
- http://www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/umbellularia/californica.htm

Umbellularia californica (California Laurel)
- Describes physical characteristics of leaf, flower, fruit, twig, and bark. Includes images.
- http://www.cnr.vt.edu/dendro/dendrology/syllabus/ucalifornica.htm

Umbellularia californica
- Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology.
- http://www.fs.fed.us/database/feis/plants/tree/umbcal/