| Family | BORAGINACEAE |
| Genus species | Nihon japonicum (Thunb.) A.Otero & al. |
| Bibliography | Phytotaxa 173: 266 (2014) |
| Native Range | c. & s. Japan |
| Primary Biome | Temperate |
| Habitat | grassland |
| Altitude | 200-1300m |
| Description | short, thick rootstock, leaves 7-15cm, oblanceolate, gradually tapered to petiolate base, coarsely hirsute, flowers 1cm across in simple, leafy raceme, 2-7cm long |
| Size | 10-20cm |
| Color | blue |
| Bloom | spring |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, sunny site alpine house, moist, rich, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C division in spring; cuttings in late summer |
| Synonyms | Cynoglossum japonicum Thunb. Omphalodes japonica (Thunb.) Maxim. Omphalodes japonica f. albiflora Okamoto Omphalodes japonica var. echinosperma Kitam. |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |