| Collector | Balslev, H. |
| Number | 9847 |
| Collected with | Voradol Chamchumroom, Witsanu Saisorn, Pirada Sumanon & Suwat Suwanachat |
| Country | Thailand |
| Subpart | Mae Hong Son province |
| County | |
| Locality | Khun Yuam district. Mae Surin Waterfall, montane forest with many pines (planted); trail to view point. 20 km along #4009 North of take-off from #1263. |
| Coordinates | 18° 56' 33'' N 98° 4' 16'' E |
| Minimum elevation (m) | 1197 |
| Maximum elevation (m) | 1197 |
| Start date | 2019/07/14 |
| End date | 2019/07/14 |
| Family | Rubiaceae |
| Identification | Ophiorrhiza alata Craib |
| Determined by | |
| Identification qualifier | |
| Field notes | Ground herb, flowers white. |
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