Calycanthus occidentalis Hook. & Arn.
Calycanthaceae
| Collection Number | not collected |
| Collectors | |
| Identified By | |
| Source | C. Davidson |
| Date | 24 October 2003 |
| Country | USA |
| state | California |
| county | Sonoma |
| Garden | Sonoma State University Arboretum |
| Location | City of Rohnert Park, off Highway 101 south of Santa Rosa |