| Family | HYPERICACEAE |
| Genus species | Hypericum yojiroanum Tatew. & Koji Ito sect. Hypericum |
| Bibliography | J. Jap. Bot. 39: 133 (1964) |
| Native Range | Japan (Hokkaido) |
| Primary Biome | Temperate |
| Habitat | scree |
| Altitude | 1300-1600m |
| Description | leaves sessile, petiolate, 5-17mm, obovate to orbiculate, cartilagineous, rounded, flat, glandular-punctate, cymes 1-5-flowered, corolla 10-15mm, petals rounded |
| Size | 2-12cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | gravelly, humous, moist, sunny site alpine house, moist, humous, gravelly soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 10-16°C division in spring; cuttings in late summer |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |