| Collector | Holm-Nielsen, L. B. |
| Number | 27211 |
| Collected with | Jaramillo, J. & Coello, F. & Asanza, E. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Upper slopes of Guagra Urcu. Cataract with waterfall, moist scrub forest. |
| Coordinates | 0° 28' S 77° 43' W |
| Minimum elevation (m) | 2750 |
| Maximum elevation (m) | 2750 |
| Start date | 1980/09/26 |
| End date | 1980/09/26 |
| Family | Dryopteridaceae |
| Identification | Polystichum dubium (H. Karst.) Diels |
| Determined by | Moran, R.C. (AAU), 1993. |
| Identification qualifier | |
| Field notes | Behind cascade. |
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