| Family | Araceae |
| Subfamily | Aroideae |
| Tribe | Arisaemateae |
| Scientific name | Arisaema thunbergii Blume subsp. urashima (H. Hara) H. Ohashi & J. Murata |
| Synonyms | Arisaema thunbergii Blume var. kashimense Hayashi; Arisaema thunbergii Blume var. monostachyum Nakai; Arisaema thunbergii Blume var. urashima (Hara) Makino; Arisaema urashima H. Hara; Arisaema urashima H. Hara var. kashimense Hayashi; Flagellarisaema urashima (H. Hara) Nakai |
| Common name | (Japanese common name) urashima-sou (ウラシマソウ, 浦島草 [meaning: Urashima weed (Urashima = a legendary fisherman who visited at the Palace of the Dragon King)]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido (Southwest region), Honshu, Shikoku, Kyushu (Saga Prefecture) |
| (Other nations) Korea | |
| Chromosomal number | 2n=28 |
| Description | Plants 15-35cm tall. Leaves single 18-40cm across, 11-19 leaflets. Flowers spathes 8-20cm long, flowering in March to May. Perennial plants. |
| Reference | Arisaema thunbergii Blume subsp. urashima (H. Hara) H. Ohashi & J. Murata |
| Flagellarisaema urashima (H.Hara) Nakai | |
| International Ariod Society: The Arisaema Species |
| April 2007 at lowland forest edge |
April 2006 at lowland forest edge |
April 2007 at lowland forest edge |
| April 2006 at lowland forest edge |
April 2006 at lowland forest edge |
April 2007 at lowland forest edge |
| April 2009 at my home |
April 2009 at my home |
April 2009 at my home |
| April 2009 at my home |
| April 2009 at a Nursery |
April 2009 at a Nursery |
April 2009 at a Nursery |
| April 2009 at a Nursery |
April 2009 at a Nursery |
April 2009 at a Nursery |