| Collector | Lojtnant, B. |
| Number | 13364 |
| Collected with | Molau, U. |
| Country | Ecuador |
| Subpart | PASTAZA |
| County | |
| Locality | Montalvo, 0-1 km N and E of the military camp. Partly disturbed rain forest. |
| Coordinates | 2° 5' S 76° 58' W |
| Minimum elevation (m) | 250 |
| Maximum elevation (m) | 250 |
| Start date | 1979/05/17 |
| End date | 1979/05/19 |
| Family | Alismataceae |
| Identification | Echinodorus tunicatus Small |
| Determined by | Lehtonen, S |
| Identification qualifier | |
| Field notes | In water in ditch. Ca 1 m high. Perianth greenish white. Anthers yellow. |