| Family | RUBIACEAE |
| Genus species | Galium yakusimense Masam. |
| Bibliography | J. Soc. Trop. Agric. 2: 37 (1930) |
| Native Range | Japan (Yakushima) |
| Primary Biome | Temperate |
| Habitat | grassland and thickets |
| Description | stems glabrous, leaves in whorls of 4, sessile, elliptic to suborbiculate, 1-3cm, glabrous, rounded, mucronate, inflorescence 2-5cm long, terminal or axillary |
| Size | 5-20cm |
| Color | white |
| Bloom | spring |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, semi-shady site alpine house, moist, rich, drained soil, semi-shade |
| Propagation | seed in spring, barely covered, germ. 1 month, 10-16°C division in early spring and fall; cuttings in late summer |
| Synonyms | Galium kamtschaticum var. yakusimense (Masam.) T.Yamaz. |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |