| Man’yō Name | Nagi/Konagi 奈伎、奈宣、水葱（ なぎ・こなぎ） |
| Modern Name |
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| English Names | Heartleaf false pickerelweed; oval-leafed pondweed |
| Scientific Name |
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| Distribution | Hokkaido, Honshu, Shikoku, Kyushu |
| Appearance | |
| Seasonal Association |
Poems (4)
| MYS III: 407 | MYS XIV: 3415 | MYS XIV: 3576 | MYS XVI: 3829 |