Stachyurus praecox Siebold & Zucc.
Stachyuraceae
| Collection Number | Not collected |
| Collectors | (D. Boufford, C. Davidson, S. R. Christoph) |
| Identified By | D. Boufford (GH) |
| Source | C. Davidson |
| Date | 25 May 2016 |
| Country | Japan |
| region | Honshu |
| prefecture | Niigata |
| Location | Myoko-Togakushi Renzan National Park. East of Tsubame village on road 39 (on Google Maps). Shiratagira-gawa (valley). Trail along Otagiri River from parking to So-taki (waterfall).. 1092 m elev. |
| Lat/Long | N 36 54 14.2 E 138 8 25.3 |
| Note | Deciduous forest along the river and the slopes above. Shrub 2-2.5 m on a steep bank. |