| Family | Polypodiaceae |
| Scientific name | Polypodium formosanum Baker |
| Synonyms | none |
| Common name | (Japanese common name) taiwan ao-ne-kadzura [Taiwan green roots vine] |
| (English common name) green caterpillar fern, caterpillar fern, grub fern | |
| Distribution | (Japan) Kyushu (Yakushima Island), Okinawa (Iriomote Island) |
| (Other nations) China, Taiwan | |
| Chromosomal number | n=37, 2n=72 (2x) |
| Description | Leaves 30-60cm length, 10-15cm width. Wintergreen. Trrestrial. Perennial plants. |
| May 2007 at Koishikawa Botanical Garden |
May 2007 at Koishikawa Botanical Garden |
May 2007 at Koishikawa Botanical Garden |
| May 2007 at Koishikawa Botanical Garden |
May 2007 at Koishikawa Botanical Garden |
| May 2007 at Koishikawa Botanical Garden |