| Family | Rosaceae |
| Scientific name | Spiraea thunbergii Siebold ex Blume |
| Synonyms | Chaenomeles maulei (Masters) C. K. Schneider; Cydonia japonica (Thunberg) Persoon; Cydonia lagenaria Loisel.; Pyrus japonica Thunberg; Pyrus maulei Masters |
| Common name | (Japanese common name) yuki-yanagi [snow willow] |
| (English common name) Thunberg's meadowsweet | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu |
| (Other nations) China | |
| Chromosomal number | unknown |
| Description | Plants 1-1.5m. Leaves 2-4.5cm. Flowers white 8mm, flowering in March to April. Deciduous. Shrub. |
| Reference | Spiraea thunbergii Siebold ex Blume |
| Spiraea thunbergii Siebold ex Blume | |
| Insect repellent (US Patent 20060153890) | |
| Cosmetic composition and production thereof (US Patent 20060018867) | |
| Hair treatment composition and hair cosmetic for damaged hair (US Patent 20060165636) |
| March 2007 at Ushiku Forest Park |
March 2007 at Ushiku Forest Park |
March 2007 at Ushiku Forest Park |