| Collector | Panyadee, P. |
| Number | 327 |
| Collected with | R. Kantasrila, W. Rujichaipimon, M. Tabut |
| Country | Thailand |
| Subpart | Phayao |
| County | |
| Locality | Dipterocarp forest, near Wat Pong Kluea, community forest, next to Mae Puem national park, Mae Lao Sub-District, Chiang Kham district |
| Coordinates | |
| Minimum elevation (m) | 428 |
| Maximum elevation (m) | 428 |
| Start date | 2022/08/29 |
| End date | 2022/08/29 |
| Family | Acanthaceae |
| Identification | Ruellia siamensis J.B.Imlay |
| Determined by | |
| Identification qualifier | |
| Field notes | Herb, about 30 cm. tall. Flower dark blue. |