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CCDB → Pteridophytes → Dryopteridaceae → Dryopteris → Dryopteris filix-mas subsp. x Maxon ex Ewan
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Dryopteris filix-mas subsp. x | Dryopteris filix-mas subsp. x Maxon ex Ewan | 163-165, c.157, c.160, c.162, c.166 | IPCN online | Bar, A. 2006. Farnstudien: Der tetraploide Bastard Dryopteris filix-mas x Dryopteris affinis subsp. affinis (Dryopteris x complexa Fraser-Jenkins 1987). Ber. Bayer. Bot. Ges. 76: 53–84. | ||
| ! | Dryopteris filix-mas subsp. x Maxon ex Ewan | Dryopteris filix-mas subsp. x Maxon ex Ewan | c.123I | Cave1962 | Wagner & Hagenah 1962 |