| Collector | Kuhnhauser, B. |
| Number | 59 |
| Collected with | Wolf Eiserhardt, Peter Petoe, Jeremy Lihan Ding, Nichola, Vincent, Jarrett |
| Country | Malaysia |
| Subpart | Borneo |
| County | |
| Locality | Sarawak. Miri Division. Gunung Mulu National Park, Headhunters trail. Alluvial forest |
| Coordinates | 4° 8' 37'' N 114° 53' 35'' E |
| Minimum elevation (m) | 130 |
| Maximum elevation (m) | 130 |
| Start date | 2018/11/20 |
| End date | 2018/11/20 |
| Family | Arecaceae |
| Identification | Calamus optimus Becc. |
| Determined by | J. Dransfield |
| Identification qualifier | |
| Field notes | Clustering, height 5m, stem length 6m, leaf length 2.5m incl. cirrus 1.2m and petiole 10-20cm, sheath green and spines green, leaflets 2-3 per side, upper side green, lower side white, red-white sap |
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