| Name | Tortula robusta var. laxa E. B. Bartram |
| Authorship | E. B. Bartram |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Tortula robusta Hooker & Greville |
| Citation | 1946 Farlowia 2(3): 310 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Tortula robusta var. laxa E. B. Bartram |
| Identification made in | [no date] (9), 2005 (2) |
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