| Collector | Holm-Nielsen, L. B. |
| Number | 21167 |
| Collected with | Jaramillo, J. & Brandbyge, J. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Cuyabeno. 10 km upstream from Río Aguas Negras. Riverside forest. |
| Coordinates | 0° 10' S 75° 58' W |
| Minimum elevation (m) | 220 |
| Maximum elevation (m) | 220 |
| Start date | 1980/02/15 |
| End date | 1980/02/15 |
| Family | Fabaceae |
| Identification | Zygia longifolia (H. & B. ex Willd.)Britton & Rose. |
| Determined by | Neill, D. (MO), 1997. |
| Identification qualifier | |
| Field notes | Tree 10 m tall, along river. Petals violet. |
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