| Family | Papaveraceae |
| Subfamily | Chelidonioideae |
| Scientific name | Eomecon chionantha Hance |
| Synonyms | none |
| Common name | (Japanese common name) shirayuki-geshi (シラユキゲシ, 白雪芥子 [meaning: snow white poppy]) |
| (English common name) snow poppy | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) [native] China | |
| Habitat | Forest edge |
| Chromosomal number | 2n=18 |
| Description | Scapes ca. 40cm tall. Flowers white 3-5cm across, flowering in April to May. Perennial plants. |
| Reference | Eomecon chionantha Hance |
| Eomecon chionantha Hance | |
| Note | Naturalized Plants (after Wrld War II). Invasive plants (conflict with many Japanese native Liliaceae plants). |
| April 2007 at lowland forest edge |
April 2007 at lowland forest edge |
April 2007 at lowland forest edge |
| April 2007 at lowland forest edge |