| Collector | Balslev, H. |
| Number | 11750 |
| Collected with | Prateep Panyadee & Supalak Pumikong |
| Country | Thailand |
| Subpart | Ranong province, Suk Samran district, Kamphuan subdistrict |
| County | |
| Locality | A few km E of Suk Samran Hospital and school where the flat coastal (agricultural) plain changes to the hills with tropical rainforest. Near ranger post. |
| Coordinates | 9° 20' 49.96'' N 98° 27' 8.02'' E |
| Minimum elevation (m) | 106 |
| Maximum elevation (m) | 106 |
| Start date | 2026/06/19 |
| End date | 2026/06/19 |
| Family | Arecaceae |
| Identification | Calamus |
| Determined by | |
| Identification qualifier | |
| Field notes | Very large climbing palm; brown spines in groups; lvs spreading; petiole 10–20 cm; lamina flat, 350 x 100 cm; pinnae 66 per side, longest one 60 cm; peduncle 350(+) cm, cirrus 350 cm; infructescence 1 with 17 branches. |
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