| Name | Plagiochasma rousselianum Montagne |
| Authorship | Montagne |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Plagiochasma |
| Remarks | Colation for protologue "23, p. 334 pl 9. f.1" fide Evans A.W., 1915, Bulletin of the Torrey Botanical Club, 42(5) p 260. |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Plagiochasma rousselianum Montagne |
| Identification made in | [no date] (4) |