| Collector | Fay, A. |
| Number | 3919 |
| Collected with | Louis Fay |
| Country | Ecuador |
| Subpart | Napo |
| County | |
| Locality | El Chaco Cantón. Just above the north side of Rio Oyacachi, where the Lago Agrio Rd. crosses the river. High forest |
| Coordinates | 0° 18' S 77° 21' W |
| Minimum elevation (m) | 1500 |
| Maximum elevation (m) | 1500 |
| Start date | 1992/08/09 |
| End date | 1992/08/09 |
| Family | Dryopteridaceae |
| Identification | Megalastrum pubirhachis R.C.Moran, J.Prado & Sundue |
| Determined by | R.C.Moran (NY), J.Prado (SP) & M. Sundue (NY) |
| Identification qualifier | |
| Field notes | Stipe 80-105, blade 100, pinnae ca. 40 cm. tripinnate at base, non-conformal apex |
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