| Name | Dryopteris sparsa var. subpurpurascens Rosenstock |
| Authorship | Rosenstock |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Dryopteris sparsa (D. Don) Kuntze |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Dryopteris sparsa var. subpurpurascens Rosenstock |
| Identification made in | [no date] (1) |
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