| Family | Polypodiaceae |
| Scientific name | Phymatosorus scolopendria (Burmann f.) Pichi Sermolli |
| Synonyms | Microsorum scolopendria (Burmann f.) Copeland; Microsorium scolopendria (Burmann f.) Copeland; Phymatodes scolopendria (Burmann f.) Ching; Polypodium phymatodes L.; Polypodium scolopendrium Burmann f. |
| Common name | (Japanese common name) oknawa ura-boshi [Okinawa backside stars] |
| (English common name) monarch fern | |
| Distribution | (Japan) Ogasawara Islands, Okinawa |
| (Other nations) tropic Asia, Africa | |
| Chromosomal number | n=36 |
| Description | Leaves 40cm length, 35cm width. Evergreen. Terrestrial (sometimes lithophyte) at forest edge. Perennial plants. |
| Reference | Phymatosorus scolopendria (Burmann f.) Pic. Serm. |
| Phymatosorus scolopendria, Microsorum scolopendria, Polypodium scolopendria | |
| Polypodiaceae Berchtold & J. Presl |
| October 2006 at Tsukuba Botanical Garden |
October 2006 at Tsukuba Botanical Garden |
October 2006 at Tsukuba Botanical Garden |
| October 2006 at Tsukuba Botanical Garden |