| Name | Sagina maxima subsp. crassicaulis (S. Watson) Crow |
| Authorship | (S. Watson) Crow |
| Rank | Subspecies |
| NomenclaturalStatus | Unknown |
| Placed in | Sagina maxima A. Gray |
| Holdings | 28 Specimens held in the Harvard University Herbaria identified as Sagina maxima subsp. crassicaulis (S. Watson) Crow |
| Identification made in | [no date] (17), 1974 (8), 1993 (3) |