| Name | Sphaeropteris atrox (C. Christensen) R. M. Tryon |
| Authorship | (C. Christensen) R. M. Tryon |
| Rank | Species |
| Placed in | Sphaeropteris Bernhardi |
| Citation | 1970 Contr. Gray Herb. 200: 21 |
| Holdings | 73 Specimens held in the Harvard University Herbaria identified as Sphaeropteris atrox (C. Christensen) R. M. Tryon |
| Identification made in | [no date] (73) |
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