| Collector | Holm-Nielsen, L. B. |
| Number | 20119 |
| Collected with | Jaramillo, J. & Coello, F. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Aguarico. Tangoy, 1 hour downstream from Zancudo. Flooded forest along the river. |
| Coordinates | 0° 34' S 75° 27' W |
| Minimum elevation (m) | 290 |
| Maximum elevation (m) | 290 |
| Start date | 1979/08/29 |
| End date | 1979/08/29 |
| Family | Arecaceae |
| Identification | Geonoma supracostata Svenning |
| Determined by | H. Balslev |
| Identification qualifier | |
| Field notes | 2 m. Axis of inflorescence orange. Fruits black. |
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