Cephalanthus occidentalis L.
Rubiaceae
| Collection Number | not collected |
| Collectors | |
| Identified By | |
| Source | C. Davidson |
| Date | 29 June 2007 |
| Country | USA |
| state | Washington, D.C. |
| Garden | U.S. National Arboretum |
| Location | 3501 New York Ave, NE, about 2.2 miles from the Capitol Building. |