| Collector | Middleton, D.J. |
| Number | 4775 |
| Collected with | P.Karaket, S.Lindsay, S.Suddee |
| Country | Thailand |
| Subpart | Kanchanaburi |
| County | |
| Locality | Sangkhlaburi district: Tung Yai Naresuan Wildlife Sanctuary. Along Song Kalia River. In disturbed area along river bank. |
| Coordinates | 15° 13.5' N 98° 26.8' E |
| Minimum elevation (m) | 175 |
| Maximum elevation (m) | 175 |
| Start date | 2009/01/24 |
| End date | 2009/01/24 |
| Family | Lamiaceae |
| Identification | Pogostemon helferi (Hook.f.) Press |
| Determined by | B.Bongcheewin |
| Identification qualifier | |
| Field notes | Terrestrial herb. Stems green, suffused purple. Leaves mid green, margins strongly undulate. Stamens and flower hairs purple. Corolla darker purple. Young fruit green. |
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This record