| Family | Myrsinaceae (also placed in Primulaceae) |
| Scientific name | Lysimachia japonica Thunberg |
| Synonyms | Lysimachia japonica Thunberg forma subsessilis (F. Maekawa) Murata |
| Common name | (Japanese common name) ko-nasubi (コナスビ, 小茄子 [meaning: small eggplant]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, Indonesia, Papua New Guinea, Australia, Malaysia, Bhutan, India, Sri Lanka | |
| Habitat | Roadside, farm yard |
| Chromosomal number | 2n=18, 20, 22 |
| Description | Plants creeping. Leaves 6-23mm long, 5-15mm wide. Flowers yellow corollas 5-7mm across, flowering in May to July. Perennial plants. |
| Reference | Lysimachia japonica Thunberg |
| July 2006 at lowland forest |
July 2006 at lowland forest |
July 2006 at lowland forest |