| Family | Apiaceae (alt. Umbelliferae) |
| Scientific name | Bupleurum ajanense (Regel) Krasnoborov ex T. Yamazaki |
| Synonyms | Bupleurum ranunculoides L. var. ajanense Regel; Bupleurum triradiatum Adams ex Hoffmann var. alpinum auct., non Ruprecht; Bupleurum triradiatum auct., non Adams ex Hoffmann |
| Common name | (Japanese common name) rebun-saiko (レブンサイコ, 礼文紫胡 [meaning: Rebun Island saiko (saiko = a traditional Chinese medicine)]), chishima-saiko (チシマサイコ, 千島紫胡 [meaning: Kuril islands saiko]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido |
| (Other nations) Russia (Far East) | |
| Habitat | Alpine rocks |
| Chromosomal number | 2n=8 (2x), 12 (3x), 16 (4x) |
| Description | Plants 5-15cm tall. Leaves 5-10cm long. Flowers purple, flowering in July to August. Perennial plants. |
| Reference | Bupleurum ajanense (Regel) Krasnob. |
| August 2009 at my home |
August 2009 at my home |
August 2009 at my home |