| Collector | Barfod, A.S. |
| Number | 45267 |
| Collected with | C. Niyomdham, W. Ueachirakan, A. Bogh Pedersen, T. Burholt |
| Country | Thailand |
| Subpart | PHANGNGA |
| County | |
| Locality | Sri Phangnga National Park. Hill dipterocarp forest. |
| Coordinates | 9° 0' N 98° 28' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 200 |
| Start date | 1994/02/25 |
| End date | 1994/02/25 |
| Family | Arecaceae |
| Identification | Calamus helferianus subsp. helferianus |
| Determined by | A. Henderson |
| Identification qualifier | |
| Field notes | Clustering rattan. Stem to 7 m long. Diameter without sheaths 1 cm, with sheaths 1.4 cm. Distance between leaf sheath mouths variable 4 to 10 cm. Petioles variable 30 to 40 cm. long. Leaf blade 1.4 cm long. Cirrus 25 cm long. Twenty-eight pinnae on each side of rachis. Arranged in groups of up to 5. |
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