Ranzania japonica (T. Itô ex Maxim.) T. Itô
Berberidaceae
| Collection Number | Not collected |
| Collectors | (D. Boufford, C. Davidson, S. R. Christoph) |
| Identified By | D. Boufford (GH) |
| Source | C. Davidson |
| Date | 27 May 2016 |
| Country | Japan |
| region | Honshu |
| prefecture | Niigata |
| Location | Myoko Togakushi Renzan National Park. Trail to the summit of Mt. Hiuchi, ca. half way up. Above Kurosawa River. 1573 m elev. |
| Lat/Long | N 36 53 18.6 E 138 04 47.5 |
| Note | Growing in volcanic ash, bare areas amid clumps of Sasa. Snow slide area. |