| Collector | Maxwell, J.F. |
| Number | 76-580 |
| Collected with | |
| Country | Thailand |
| Subpart | Sisaket |
| County | |
| Locality | Dongrak Range at Chong Bat Lak, Kantaralak Dist., Sisaket Province |
| Coordinates | 14° 30' N 104° 0' E |
| Minimum elevation (m) | 600 |
| Maximum elevation (m) | 600 |
| Start date | 1976/08/19 |
| End date | 1976/08/19 |
| Family | Arecaceae |
| Identification | Calamus tetradactylus Hance |
| Determined by | |
| Identification qualifier | |
| Field notes | erect 1m, later scandent shaded evergreen forest bracts, calyx corolla, ovary green; stigma/style whitis |
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