| Family | Araceae |
| Subfamily | Aroideae |
| Tribe | Arisaemateae |
| Scientific name | Arisaema thunbergii Blume |
| Synonyms | Flagellarisaema thunbergii (Blume) Nakai |
| Common name | (Japanese common name) nangoku urashima-sou (ナンゴクウラシマソウ, 南国浦島草 [meaning: southern area urashima-sou (urashima-sou = Arisaema thunbergii subsp. urashima)]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido (Southwest region), Honshu (west of Kinki region), Shikoku, Kyushu |
| (Other nations) none | |
| Chromosomal number | 2n=28 |
| Description | Leaves single (or merely 2) 8-23cm. Flowers spathes 12-18cm long, flowering in March to May. Perennial plants. |
| Reference | Arisaema thunbergii Blume |
| Flagellarisaema thunbergii (Blume) Nakai | |
| International Ariod Society: The Arisaema Species | |
| Note | Native to Japan. |
| Arisaema thunbergii Blume subsp. autumnale J. C. Wang occurs in Taiwan. |
| April 2008 at Kochi Prefecture Makino Botanical Garden |
April 2008 at Kochi Prefecture Makino Botanical Garden |
April 2008 at Kochi Prefecture Makino Botanical Garden |