| Collector | Ollgaard, B. |
| Number | 1210 |
| Collected with | H. Navarrete |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Oyacachi, ca 2 km below the village, opposite abandoned village. Tall montane forest on slightly sloping ground. Casajuchu. |
| Coordinates | 0° 13' S 78° 3' W |
| Minimum elevation (m) | 3150 |
| Maximum elevation (m) | 3150 |
| Start date | 1995/10/26 |
| End date | 1995/10/26 |
| Family | Thelypteridaceae |
| Identification | Thelypteris retrorsa (Sodiro)A. R. Sm. |
| Determined by | Ollgaard, B. (AAU), 1996. |
| Identification qualifier | |
| Field notes | On forest floor, leaves to 3 m long, scandent. |
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