| Collector | Tagawa, M. |
| Number | 9097 |
| Collected with | K. Iwatsuki, H. Koyama, N. Fukuoka, A. Nalampoon & A. Chintayungkun |
| Country | Thailand |
| Subpart | Lamphun |
| County | |
| Locality | en route from Ban Khun Tan to Doi Khun Tan |
| Coordinates | |
| Minimum elevation (m) | 0 |
| Maximum elevation (m) | 0 |
| Start date | 1967/09/04 |
| End date | 1967/09/04 |
| Family | Lamiaceae |
| Identification | Rotheca serrata (L.) Steane & Mabb. |
| Determined by | C. Leeratiwong |
| Identification qualifier | |
| Field notes | Shrub 2 m tall; fls. purple. In sunny place. |
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