| Name | Vigna umbellata var. gracilis (Prain) Marechal, Mascherpa & Stainier |
| Authorship | (Prain) Marechal, Mascherpa & Stainier |
| Rank | Variety |
| Placed in | Vigna umbellata (Thunberg) Ohwi & H. Ohashi |
| Citation | 1978 Taxon 27(2-3): 201 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Vigna umbellata var. gracilis (Prain) Marechal, Mascherpa & Stainier |
| Identification made in | [no date] (1) |