| Family | Styracaceae | 
| Scientific name | Styrax japonicus Siebold & Zuccarini | 
| Synonyms | Cyrta japonica (Siebold & Zuccarini) Miers; Styrax bodinieri H. Léveillé. Styrax japonica Siebold & Zuccarini var. macrophylla Nakai ex Hanbury; Styrax seminatus Farges | 
| Common name | (Japanese common name) ego-no-ki [bitter tree] | 
| (English common name) Japanese snowbell | |
| Distribution | (Japan) Hokkaido (Hidaka region), Honshu, Shikoku, Kyushu, Okinawa | 
| (Other nations) Korea, China, Taiwan, Philippines, Vietnam, Laos | |
| Chromosomal number | 2n=40 | 
| Description | Plants 7-15m. Leaves 4.5-8cm length. Flowers white corollas 1.5-2cm, flowering in May to June. Deciduous. Arbor trees. | 
| Reference | Styrax japonicus Siebold & Zucc. | 
| Styrax japonicus Siebold & Zuccarini | |
| Herbicidal compositions (US Patent 4265654/1981) | |
| Herbicidal composition and herbicidal processes (US Patent 4552584/1985) | 
| May 2007 at forest edge | May 2007 at forest edge | May 2007 at forest edge | 
| May 2007 at forest edge | May 2007 at forest edge |