| Collector | Holm-Nielsen, L. B. |
| Number | 7227 |
| Collected with | Jeppesen, S. & Lojtnant, B. & Ollgaard, B. |
| Country | Ecuador |
| Subpart | GUAYAS |
| County | |
| Locality | Hacienda Piedad, 3 km N of Balzar along Río Daule. Swampy areas with gallery vegetation. |
| Coordinates | 1° 20' S 79° 54' W |
| Minimum elevation (m) | 25 |
| Maximum elevation (m) | 25 |
| Start date | 1973/06/17 |
| End date | 1973/06/17 |
| Family | Hydrocharitaceae |
| Identification | Limnobium laevigatum (H. & B. ex Willd.) Heine |
| Determined by | R. R. Haynes, 1981 |
| Identification qualifier | |
| Field notes | Growing in 5 cm water. Petals white. Flowers dimorphic? |
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