| Name | Megalastrum atrogriseum (C. Christensen) A. R. Smith & R. C. Moran |
| Authorship | (C. Christensen) A. R. Smith & R. C. Moran |
| Rank | Species |
| Placed in | Megalastrum |
| Citation | 1988 Amer. Fern J. 77(4): 127 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Megalastrum atrogriseum (C. Christensen) A. R. Smith & R. C. Moran |
| Identification made in | 2009 (1) |