| Family | Araceae |
| Subfamily | Aroideae |
| Tribe | Arisaemateae |
| Scientific name | Arisaema sikokianum Franchet et Savatier |
| Synonyms | Arisaema macrocarpum Makino; Arisaema magnificum Nakai; Arisaema sikokianum Franchet & Savatier var integrifolium Nakai |
| Common name | (Japanese common name) yuki-mochi-sou (ユキモチソウ, 雪餅草 [meaning: snow rice cake weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Sizuoka Prefecture, Mie Prefecture, Nara Prefecture), Shikoku |
| (Other nations) none | |
| Chromosomal number | 2n=28 |
| Description | Plants 10-28cm tall. Leaves 10-23cm long. Flowers dark brown (or merely green) spathes 17-24cm long, flowering in April to May. Perennial plants. |
| Reference | Arisaema sikokianum Franch. & Sav. |
| Arisaema sikokianum Franch. & Sav. | |
| International Aroid Society: The Arisaema Species | |
| Note | Rare species. |
| April 2007 at Tsukuba Botanical Garden |
April 2008 at Kochi Prefecture Makino Botanical Garden |
April 2008 at Kochi Prefecture Makino Botanical Garden |
| April 2009 at Tsukuba Botanical Garden |
April 2009 at Tsukuba Botanical Garden |
| April 2009 at a Nursery |