| Family | Papaveraceae |
| Subfamily | Chelidonioideae |
| Scientific name | Chelidonium majus L. subsp. asiaticum (H. Hara) Ohwi |
| Synonyms | Chelidonium asiaticum (H. Hara) Krahulc.; Chelidonium majus L. var. asiaticum (H. Hara) Ohwi ex W. T. Lee; Chelidonium majus L. var. hirsutum Trautvetter & C. A. Meyer |
| Common name | (Japanese common name) kusa-no-ou (クサノオウ, 瘡ノ王 [meaning: the King of skin disease medicine]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China | |
| Habitat | Field, forest edge |
| Chromosomal number | 2n=10 |
| Description | Plants 30-80cm tall. Flowers yellow petals each 10-12mm long, flowering in May to July. Winter annual plants. |
| Reference | Chelidonium majus L. |
| Cytotaxonomic study of Chelidonium majus L. s. l. | |
| Pharmaceutical compositions comprising chelidonine or derivatives thereof (US Patent 6887882/2005) | |
| A composition for preventing plant diseases resulted from infection of plant pathogens and a method for preparing the same (US Patent 20060228428) | |
| Pharmaceutical compositions comprising chelidonine or derivatives thereof (WIPO Patent WO/2002/092085) |
| April 2007 at lowland field |
April 2007 at lowland field |
April 2007 at lowland field |
| April 2007 at lowland field |