| Collector | Holm-Nielsen, L. B. |
| Number | 16158 |
| Collected with | |
| Country | Ecuador |
| Subpart | PICHINCHA |
| County | |
| Locality | Road San Antonio - Calacalí - Nanegal, 20 km W of Calacalí. Pastures and shrub forests on rocky slopes. Cloud forest area. |
| Coordinates | 0° 1' N 78° 34' W |
| Minimum elevation (m) | 2700 |
| Maximum elevation (m) | 2700 |
| Start date | 1979/03/25 |
| End date | 1979/03/25 |
| Family | Thelypteridaceae |
| Identification | Thelypteris rudiformis (C. Chr.)A. R. Sm. |
| Determined by | Smith, A. (UC), 1983. |
| Identification qualifier | |
| Field notes | In rather humid montane forest. |
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