| Family | HYPERICACEAE |
| Genus species | Hypericum nakaii H.Koidz. sect. Hypericum |
| Bibliography | J. Pl. Iwateken 2(2): 99 (1937) |
| Native Range | Japan (Hokkaido) |
| Primary Biome | Temperate |
| Habitat | grassland |
| Altitude | 0-1500m |
| Description | leaves subsessile, patent, 20-35mm, elliptic, rounded or obtuse, subcordate, inflorescence subcorymbose, flowers 12-25 mm, petals oblanceolate |
| Size | 10-40cm |
| Color | golden yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, sunny site alpine house, moist, rich, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 10-16°C division in spring; cuttings in late summer |
| Synonyms | Hypericum kamtschaticum var. hidakense Y.Kimura Hypericum nakaii f. atropurpureipunctatum H.Koidz. Hypericum nakai var. linearilanceolatum H.Koidz. Hypericum nakai var. nanum H.Koidz. Hypericum samaniense Miyabe & Y.Kimura Hypericum samaniense f. debile Miyabe & Y.Kimura Hypericum samaniense var. elatum Y.Kimura |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |