| Collector | Larsen, K. |
| Number | 41000 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | SONGKHLA |
| County | |
| Locality | Songkhla - Pattani road, c 5o km from Songkhla. Melaleuca swamp on white sandy soil. |
| Coordinates | 6° 53' N 100° 55' E |
| Minimum elevation (m) | 0 |
| Maximum elevation (m) | 0 |
| Start date | 1990/10/31 |
| End date | 1990/10/31 |
| Family | Cyperaceae |
| Identification | Cyperus radians Nees & Mey. ex Nees |
| Determined by | Simpson, D.A. (K), 1994. |
| Identification qualifier | |
| Field notes | |