| Collector | Larsen, K. |
| Number | 41918 |
| Collected with | S. S. Larsen, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | NAN |
| County | |
| Locality | Doi Phu Kha, c 7o km NE of Nan |
| Coordinates | 19° 25' N 101° 10' E |
| Minimum elevation (m) | 1500 |
| Maximum elevation (m) | 1600 |
| Start date | 1990/12/13 |
| End date | 1990/12/13 |
| Family | Acanthaceae |
| Identification | Phlogacanthus curviflorus Nees |
| Determined by | Hansen, B. (C), 1991. |
| Identification qualifier | |
| Field notes | Herb 150 cm; corolla violet outside, whitish inside. Alc. photo. |
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