| Collector | Grayum, M. |
| Number | 4258 |
| Collected with | M. Rodriguez & A. Carajal |
| Country | Costa Rica |
| Subpart | Puntarenas |
| County | |
| Locality | Isla San Lucas, Golfo de Nicoya. |
| Coordinates | 9° 57' N 84° 54' W |
| Minimum elevation (m) | 0 |
| Maximum elevation (m) | 40 |
| Start date | 1984/10/20 |
| End date | 1984/10/20 |
| Family | Pteridaceae |
| Identification | Pityrogramma dealbata (C.Presl) Domin |
| Determined by | Weston L. Testo (F) |
| Identification qualifier | |
| Field notes | Terrestrial on steep, rocky bluff along beach at Playa Limón. Leaves chalky- white below. |
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