| Name | Plagiothecium cavifolium (Bridel) Z. Iwatsuki |
| Authorship | (Bridel) Z. Iwatsuki |
| Rank | Species |
| Placed in | Plagiothecium |
| Citation | 1970 J. Hattori Bot. Lab. 33: 360. |
| Holdings | 98 Specimens held in the Harvard University Herbaria identified as Plagiothecium cavifolium (Bridel) Z. Iwatsuki |
| Identification made in | [no date] (96), 1985 (1), 2018 (1) |