| Collector | Gentry, A.H. |
| Number | 38798 |
| Collected with | L. Emmons |
| Country | Peru |
| Subpart | Loreto |
| County | |
| Locality | Dept. Loreto. Prov. Maynas, Mishana, Rio Nanay halfway between iquitos and Santa Maria de Nanay. Campinarana forest on upland white sand near Campamento 1 |
| Coordinates | 3° 52' S 73° 30' W |
| Minimum elevation (m) | 140 |
| Maximum elevation (m) | 140 |
| Start date | 1983/01/02 |
| End date | 1983/01/02 |
| Family | Arecaceae |
| Identification | Geonoma supracostata Svenning |
| Determined by | F. Borchsenius |
| Identification qualifier | |
| Field notes | Stemless palm, leaves 2-3 m long, dark black-green, fruits green |
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