| Family | Stemonaceae |
| Scientific name | Croomia heterosepala (Baker) Okuyama |
| Synonyms | Croomia japonica Miquel var. heterosepala Baker |
| Common name | (Japanese common name) nabewari (ナベワリ [meaning: bitter weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Kyushu, Shikoku |
| (Other nations) none | |
| Habitat | Forest edge |
| Chromosomal number | 2n=24 |
| Description | Plants ca. 30-50cm tall. Leaves ca. 10cm long. Flowers green, flowering in April to May. Perennial plants. |
| Reference | Croomia heterosepala (Baker) Okuyama |
| Karyomorphology of Two Genera in Stemonaceae. | |
| Plant extracts and alkaloids having antitussive activity (US Patent 6992078/2006) |
| April 2011 at my home |
April 2011 at my home |
April 2011 at my home |