| Collector | Larsen, K. |
| Number | 41611 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | PHATTHALUNG |
| County | |
| Locality | Plai Wan waterfall, 25 km SW of Phatthalung |
| Coordinates | 7° 25' N 99° 55' E |
| Minimum elevation (m) | 150 |
| Maximum elevation (m) | 250 |
| Start date | 1990/11/19 |
| End date | 1990/11/19 |
| Family | Orchidaceae |
| Identification | Thelasis pygmaea (Griff.)Bl. |
| Determined by | H.AE.Pedersen, 1991 |
| Identification qualifier | |
| Field notes | "This specimen should always be cited as ""H.AE.Pedersen 41611"". Epiphytic habit. Growing commonly on small trees along the waterfall. All parts of the flower whitish green to whitish yellow. " |