| Collector | Balslev, H. |
| Number | 11745 |
| Collected with | Prateep Panyadee & Supalak Pumikong |
| Country | Thailand |
| Subpart | Phangnga province, Mueang Phang Nga district, Song Phraek subdistrict |
| County | |
| Locality | Narrow 4-w track past Ton Pariwat Waterfall, Songprak rafting, and several oil-palm plantations, leading to abandoned tin-mine. Tropical rainforest on hills. |
| Coordinates | 8° 38' 1.86'' N 98° 31' 58.92'' E |
| Minimum elevation (m) | 617 |
| Maximum elevation (m) | 617 |
| Start date | 2026/06/16 |
| End date | 2026/06/16 |
| Family | Arecaceae |
| Identification | Calamus |
| Determined by | |
| Identification qualifier | |
| Field notes | Cirrate liana palm; stem 600 x 1 cm; lvs. 25, distributed over the apical 2 m of the stem; petiole 46 cm; rachis 140 cm; pinnae 30 per side in groups of 3–6 in different planes; infructescence interfoliar; peduncle to 140 cm long, 6 partial inflorecences, each once branched; longest branches 40 cm with 16 rachillae when fruiting; immature fruits 5 mm diam. |
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