| Name | Ptychostomum pseudotriquetrum (Hedwig) J. R. Spence & H. P. Ramsay ex Holyoak & N. Pedersen |
| Authorship | (Hedwig) J. R. Spence & H. P. Ramsay ex Holyoak & N. Pedersen |
| Rank | Species |
| Placed in | Ptychostomum |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Ptychostomum pseudotriquetrum (Hedwig) J. R. Spence & H. P. Ramsay ex Holyoak & N. Pedersen |
| Identification made in | [no date] (1), 2024 (1) |