| Family | PRIMULACEAE |
| Genus species | Lysimachia japonica Thunb. |
| Bibliography | Syst. Veg. [J.A.Murray, ed.] ed. 14: 196 (1784) |
| Native Range | ne. Pakistan to Temp. East Asia |
| Primary Biome | Temperate |
| Habitat | grassland |
| Description | leaves ovate, 10-25mm long, translucent-punctate, petiolate, flowers to 15mm across, solitary, axillary |
| Size | 7-15cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, sunny site alpine house, moist, rich, drained soil, sun |
| Propagation | seed in spring, uncovered, light, germ. 1-3 months, 13-18°C division in spring; cuttings in late summer |
| Synonyms | Anagallis pilosa Buch.-Ham. ex D.Don Lysimachia japonica var. minutissima Masam. Lysimachia japonica f. subsessilis (F.Maek.) Murata Lysimachia japonica var. subsessilis F.Maek. Lysimachia japonica var. thunbergii F.Maek. ex H.Hara Lysimachia maculata R.Br. Lysimachia minutissima (Masam.)) Masam. Lysimachia uliginosa Blume |
| Territory | 3 Asia-Temperate 36 China (CHH Hainan, CHS China Southeast) 38 Eastern Asia (JAP Japan, KOR Korea, NNS Nansei-shoto) 4 Asia-Tropical 40 Indian Subcontinent 41 Indo-China |