| Family | Rubiaceae |
| Scientific name | Ophiorrhiza japonica Blume |
| Synonyms | none |
| Common name | (Japanese common name) satsuma-inamori (サツマイナモリ, 薩摩稲森 [meaning: SAtsuma inamori-sou (Satsuma = an old name of Kagoshima Prefecture; inamori-sou = Pseudopyxis depressa Miquel)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Chiba Prefecture), Shikoku, Kyushu, Okinawa |
| (Other nations) Taiwan, China | |
| Habitat | Forest, forest edge |
| Chromosomal number | 2n=22 |
| Description | Plants creeping 10-25cm tall, hairy. Leaves 2-5cm long, 1.5-3cm wide. Flowers white corollas 1-1.5cm long, flowering in December to May. Fruits 4mm long, 10mm wide. Perennial plants. |
| Reference | Ophiorrhiza japonica Blume |
| Chromosome Numbers of Ophiorrhiza and Psychotria (Rubiaceae) in the Ryukyus | |
| Breakdown of distyly in a tetraploid variety of Ophiorrhiza japonica (Rubiaceae) and its phylogenetic analysis |
| Photo by Mr. Ponpoko | Photo by Mr. Ponpoko | Photo by Mr. Ponpoko |
| April 2005 at forest in Kyushu |
April 2008 at forest in Kyushu |
January 2007 at forest in Kyushu |