| Name | Macromitrium standleyi var. subundulatum E. B. Bartram |
| Authorship | E. B. Bartram |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Macromitrium standleyi E. B. Bartram |
| Citation | 1928 Contr. U.S. Natl. Herb. 26: 86 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Macromitrium standleyi var. subundulatum E. B. Bartram |
| Identification made in | [no date] (2) |