| Name | Cryptodicranum armittii var. fragilifolium E. B. Bartram |
| Authorship | E. B. Bartram |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Cryptodicranum armittii (Müller Halle) E. B. Bartram |
| Citation | 1945 Bryologist 48: 111 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cryptodicranum armittii var. fragilifolium E. B. Bartram |
| Identification made in | [no date] (1) |