| Family | Gentianaceae |
| Tribe | Gentianeae |
| Subtribe | Gentianinae |
| Scientific name | Swertia tetrapetala Pallas subsp. micrantha (Takeda) Kitamura var. happoensis Hid. Takahashi ex T. Shimizu |
| Synonyms | none |
| Common name | (Japanese common name) happou takane-senburi (ハッポウタカネセンブリ, 八方高嶺千振 [meaning: Mt. Happou-one high mountain senburi (senburi = Swertia japonica (Schultes) Makino)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Mt. Happou-one) |
| (Other nations) none | |
| Habitat | Alpine rocks |
| Chromosomal number | unknown |
| Description | Plants electing 10-40cm tall. Leaves 1-3.5cm long. Flowers calyx 1.2-2.5mm long, pale purple corolla ca. 6-8mm across, flowering in July to August. Annual or winter annual plants. |
| Note | Endemic to Japan |
| Photo by Madame Popow | Photo by Madame Popow | Photo by Madame Popow |
| July 2006 at Mt. Happou-one |
July 2006 at Mt. Happou-one |
July 2006 at Mt. Happou-one |