| Collector | Balslev, H. |
| Number | 10616 |
| Collected with | Madsen, E. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Puerto Francisco de Orellana (Coca). Approx. 35 km SE of the town (Auca oil field). Margin of tropical rain forest at road. |
| Coordinates | 0° 40' S 76° 52' W |
| Minimum elevation (m) | 300 |
| Maximum elevation (m) | 300 |
| Start date | 1976/11/05 |
| End date | 1976/11/05 |
| Family | Dryopteridaceae |
| Identification | Hemidictyum marginatum (L.)C. Presl |
| Determined by | |
| Identification qualifier | |
| Field notes | Fronds to 2 m long. Stipe ca. 1 m. Lamina narrowly triangular. |
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