| Collector | Petoe, P. |
| Number | 42 |
| Collected with | Sirukit anak Dubod, Mugu anak Sanggap, Dellie anak Medie, Medie anak Aloh, William Baker, Benedikt Kuhnhauser |
| Country | Malaysia |
| Subpart | Borneo |
| County | |
| Locality | Sarawak. Sri Aman Division. Lanjak Entimau Wildlife Sanctuary. Lanjak Field Station by river landing |
| Coordinates | 1° 24' 42'' N 112° 0' 37'' E |
| Minimum elevation (m) | 325 |
| Maximum elevation (m) | 325 |
| Start date | 2018/11/04 |
| End date | 2018/11/04 |
| Family | Arecaceae |
| Identification | Calamus pseudoulur Becc. |
| Determined by | B. Kuhnhauser |
| Identification qualifier | |
| Field notes | Climbing rattan. Leaf c. 3 m long including 2 m cirrus and 10 cm petiole; Leaflets 12 each side of rachis, irregularly arranged in groups of 2-3, concolorous, with dark green indumentum below. Vestigial flagellum c. 10 cm long, spines on sheath triangular, dark with brown, hairy margin. Sheath dark green. |
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