| Collector | Kvist, L. P. |
| Number | 40494 |
| Collected with | |
| Country | Ecuador |
| Subpart | ESMERALDAS |
| County | |
| Locality | Río Cayapa, Zapallo Grande. Río Zapallo Grande (tributary of Río Cayapa) was followed in canoe 2 hours upriver. Riverbank vegetation. |
| Coordinates | 0° 47' N 78° 53' W |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 100 |
| Start date | 1982/07/02 |
| End date | 1982/07/02 |
| Family | Polygonaceae |
| Identification | Polygonum hydropiperoides Michaux |
| Determined by | |
| Identification qualifier | |
| Field notes | Herb. In river near the bank where the water is stag- nant. Nom. Vern.: Abillo tape (Cayapa); Use: As fish poison ("barbasco") for fishing. Prep.: The leaves are crushed and used in small brooks. This is a weaker sort of "barbasco" compared with the re- lated No. 40491. |
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