| Family | Ranunculaceae |
| Subfamily | Ranunculoideae |
| Tribe | Delphinieae |
| Scientific name | Aconitum pterocaule Koidzumi |
| Synonyms | Aconitum loczyanum Rapaics var. pterocaule (Koidzumi) Ohwi; Aconitum pterocaule Koidzumi var. albidum (Nakai) M. Tamura ex M. Tamura & L. A. Lauener; Aconitum pterocaule Koidzumi var. glabrescens M. Tamura ex M. Tamura & L. A. Lauener; Aconitum pterocaule Koidzumi var. siroumense (Nakai) Kadota; Aconitum sinanomontanum Nakai; Aconitum siroumense Nakai |
| Common name | (Japanese common name) adzuma reijin-sou (アズマレイジンソウ, 東麗人草 [meaning: Adzuma beauty weed (Adzuma = an ols nem of northeastern Japan)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (north of Kinki region) |
| (Other nations) none | |
| Habitat | Subalpine or mountane forest |
| Chromosomal number | unknown |
| Description | Plants electing or creeping 30-100cm. Leaves ca. 5-18cm wide. Flowers pale blue or white 2.5-3cm long, flowering in September to October. Perennial plants. |
| Reference | Transdermal delivery system for alkaloids of aconitum species (US Patent 6896898/2005) |
| Secondary metabolite production via manipulation of genome methylation (WIPO Patent WO/2006/113481) | |
| Note | Similar species : Aconitum loczyanum Rapaics occyrs in Honshu (west of Kanto region), Shikoku and Kyushu. |
| October 2007 at Nikko Botanical Gardem |
October 2007 at Nikko Botanical Gardem |
October 2007 at Nikko Botanical Gardem |
| October 2007 at Nikko Botanical Gardem |
October 2007 at Nikko Botanical Gardem |