| Family | HYPERICACEAE |
| Genus species | Hypericum watanabei N.Robson sect. Hypericum |
| Bibliography | Syst. Biodivers. 4: 44 (2006) |
| Native Range | Japan (w. Hokkaido) |
| Primary Biome | Temperate |
| Habitat | grassland |
| Description | leaves sessile, 25-40mm, ovate to elliptic, cartilagineous, rounded, flat, shallowly cordate-amplexicaule, inflorescence 16-20-flowered, narrowly cylindrical, flowers 15-20mm |
| Size | 20-30cm |
| Color | bright 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 tatewakii var. nigropunctatum S.Watan. |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |