| Collector | Holm-Nielsen, L. B. |
| Number | 2641 |
| Collected with | Jeppesen, S. & Lojtnant, B. & Ollgaard, B. |
| Country | Ecuador |
| Subpart | LOS RIOS |
| County | |
| Locality | Surroundings of Montalvo (foothills of the Andes, c. 40 km E of Babahoyo). Rain forest with coffee and cocoa-plantations. |
| Coordinates | 1° 47' S 79° 17' W |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 200 |
| Start date | 1973/03/30 |
| End date | 1973/04/02 |
| Family | Polygonaceae |
| Identification | Polygonum acuminatum Kunth |
| Determined by | R. Liesner, 1981 |
| Identification qualifier | |
| Field notes | Herb, rhizome creeping, stem ascending. Flowers white. Swampy ground. |
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