| Family | Araliaceae (also placed in Apiaceae (alt. Umbelliferae)) |
| Subfamily | Hydrocotyloideae |
| Scientific name | Hydrocotyle ramiflora Maximowicz |
| Synonyms | Hydrocotyle wilfordii Maximovicz |
| Common name | (Japanese common name) oh-chidome (オオチドメ, 大血止 [meaning: big hemostasis weed]), yama-chodome (ヤマチドメ, 山血止 [meaning: mountain hemostasis weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan | |
| Habitat | Forest edge, field, roadside |
| Chromosomal number | 2n=24 |
| Description | Plants creeping. Leaves 1.5-3.5cm across. Flowers pale green, flowering in June to September. Fruits 1-1.5mm across. Perennial plants. |
| Reference | Hydrocotyle ramiflora Maximowicz |
| Chromosome Numbers of Six Species of Hydrocotyle (Umbelliferae) in Japan | |
| Plant culture cell and use thereof (US Patent 4970151/1990) | |
| A blood coagulation component obtained by cultured cells (European Patent EP0443635/1991) | |
| Method for producing l-sesamin using plant cell cultures (European Patent EP0443635/1995) | |
| A mental disease therapeutic agent (European Patent EP0442537/1995) | |
| Blood coagulating component (Japanese Patent JP62030723/1987) | |
| Note | Hydrocotyle maritima Honda (Hydrocotyle formosana Masamune var. maritima (Honda) Hatusima; Hydrocotyle ramiflora Maximovicz var. maritima (Honda) M. Hiroe) is not a synonym of Hydrocotyle ramiflora Maximowicz. |
| July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
| June 2006 at Ushiku Forest Park |
June 2006 at Ushiku Forest Park |
June 2006 at Ushiku Forest Park |