| Collector | Ollgaard, B. |
| Number | 57161 |
| Collected with | Korning, J. & Thomsen, K. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Laguna Añangu, N side, black water swamp community, dominated by Montrichardia and tall Cyperaceae. |
| Coordinates | 0° 31' S 76° 24' W |
| Minimum elevation (m) | 250 |
| Maximum elevation (m) | 250 |
| Start date | 1985/01/24 |
| End date | 1985/01/24 |
| Family | Alismataceae |
| Identification | Echinodorus bolivianus (Rusby) Holm-Niels. |
| Determined by | R. Haynes & Holm-Nielsen, 1985 |
| Identification qualifier | |
| Field notes | On mud flats. Petals white. |