| Name | Dryopteris spinulosa var. intermedia (Muhlenberg ex Willdenow) Underwood |
| Authorship | (Muhlenberg ex Willdenow) Underwood |
| Rank | Variety |
| Placed in | Dryopteris spinulosa (O. F. Müller) Watt |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Dryopteris spinulosa var. intermedia (Muhlenberg ex Willdenow) Underwood |
| Identification made in | [no date] (5), 1915 (2), 1969 (1), 1975 (2) |
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