| Name | Acroporium secundum var. angustifolium M. Fleischer |
| Authorship | M. Fleischer |
| Rank | Variety |
| Placed in | Acroporium secundum (Reinwardt & Hornschuch) M. Fleischer |
| Citation | 1923 Musc. Buitenzorg 4: 1285 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Acroporium secundum var. angustifolium M. Fleischer |
| Identification made in | [no date] (2), 2018 (1) |