| Family | Saururaceae |
| Scientific name | Saururus chinensis (Loureiro) Baillon |
| Synonyms | Saururopsis chinensis (Loureiro) Turczaninow; Saururopsis cumingii C. de Candolle; Saururus cernuus Thunberg, non L.; Saururus loureiri Decaisne; Spathium chinense Loureiro |
| Common name | (Japanese common name) hangesho (ハンゲショウ, 半夏生 [meaning: 11th day after Summer solstice (or half make up)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, Philippines, Vietnam, India | |
| Habitat | Lowland swamp |
| Chromosomal number | 2n=22 |
| Description | Plants electing 50-100cm tall. Leaves 6-17cm long, 4-9cm wide. Flowers white inflorescences 10-15cm long, non petal, 6-7 stamens, flowering in June to August. Perennial plants. |
| Reference | Saururus chinensis (Loureiro) Baillon |
| Saururus chinensis Baill. |
| June 2007 at Kasumigaura Water Plants Garden |
June 2007 at Kasumigaura Water Plants Garden |
June 2007 at Kasumigaura Water Plants Garden |