| Family | Ranunculaceae |
| Subfamily | Ranunculoideae |
| Tribe | Actaeeae |
| Scientific name | Actaea biternata (Siebold & Zuccarini) Prantl |
| Synonyms | Cimicifuga biternata (Siebold & Zuccarini) Miquel; Cimicifuga japonica auct., non (Thunberg) Sprengel; Pityrosperma biternatum Siebold & Zuccarini |
| Common name | (Japanese common name) inu-shoma (イヌショウマ, 犬升麻 [meaning: false shoma (shoma = a traditional Chinese medicine)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Kanto region, Central region, Kinki region) |
| (Other nations) none | |
| Habitat | Mountane forest |
| Chromosomal number | unknown |
| Description | Plants 60-90cm tall. Leaves 1-2 ternate, leaflets each 5-20cm wide. Flowers calyx lobes 4-5mm long, white petals 4-5mm long, stamens 8-9mm long, flowering in August to September. Fruits 5-6mm long, seeds 1.2mm long. Perennial plants. |
| September 2008 at my home |
September 2008 at my home |
August 2008 at Nikko Botanical Garden |
| September 2008 at my home |