| Name | Dryopteris effusa var. confinis C. Christensen |
| Authorship | C. Christensen |
| Rank | Variety |
| Placed in | Dryopteris effusa (Swartz) Urban |
| GUID | urn:lsid:ipni.org:names:84644-2 |
| Citation | 1920 Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd. ser. 8, 6: 101 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Dryopteris effusa var. confinis C. Christensen |
| Identification made in | [no date] (2), 1917 (3), 2013 (3) |
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