| Family | Araliaceae (also placed in Apiaceae (alt. Umbelliferae)) |
| Subfamily | Hydrocotyloideae |
| Scientific name | Hydrocotyle yabei Makino var. japonica (Makino) M. Hiroe |
| Synonyms | Hydrocotyle japonica Makino |
| Common name | (Japanese common name) miyama-chidome (ミヤマチドメ, 深山血止 [meaning: mountain hemostasis weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea | |
| Habitat | Mountane forest |
| Chromosomal number | 2n=ca.96 (cf. Hydrocotyle yabei: 2n=24) |
| Description | Leaves 6-15mm across. Flowers flowering in June to September. Fruits ca. 1.5mm across. Perennial plants. |
| Reference | Hydrocotyle japonica Makino |
| Hydrocotyle sibthorpioides | |
| 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 | Atlas of Florida Vascular Plants and Index Synonymique de la Flore de France have identified that Hydrocotyle yabei Makino var. japonica (Makino) M. Hiroe is a synonym of Hydrocotyle sibthorpioides Lamarck. |
| September 2009 at Mt. Takao |
September 2009 at Mt. Takao |
September 2009 at Mt. Takao |
| June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |