| Collector | Holm-Nielsen, L. B. |
| Number | 21495 |
| Collected with | Jaramillo, J. & Brandbyge, J. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Aguarico. E of the mouth of Río Cuyabeno. Temporarely inundated rain forest. |
| Coordinates | 0° 16' S 75° 54' W |
| Minimum elevation (m) | 200 |
| Maximum elevation (m) | 200 |
| Start date | 1980/02/20 |
| End date | 1980/02/20 |
| Family | Alismataceae |
| Identification | Echinodorus tunicatus Small |
| Determined by | R. Haynes & Holm-Nielsen, 1985, Lehtonen,S. (TUR), 2007 |
| Identification qualifier | |
| Field notes | On temporary submerged forest floor. Flowers cleistogamic. |
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