| Name | Arisaema vexillatum H. Hara & H. Ohashi |
| Authorship | H. Hara & H. Ohashi |
| Rank | Species |
| Placed in | Arisaema Martius |
| Citation | 1973 J. Jap. Bot. 48(4): 3–5, f. 1(a–c), t. 1 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Arisaema vexillatum H. Hara & H. Ohashi |
| Identification made in | [no date] (1) |