| Family | Araliaceae |
| Scientific name | Hedera rhombea (Miquel) Bean |
| Synonyms | Hedera helix L. var. rhombea Miquel; Hedera japonica Tobler; Hedera tobleri Nakai |
| Common name | (Japanese common name) ki-dzuta [tree vine], fuyu-dzuta [winter vine] |
| (English common name) Japanese ivy | |
| Distribution | (Japan) Hokkaido (Southern region), Honshu, Kyushu, Okinawa |
| (Other nations) China, Taiwan | |
| Chromosomal number | 2n=48 |
| Description | Leaves 3-7cm. Flowers flowering in October to November. Evergreen, Vine. |
| Reference | Hedera rhombea (Miq.) Bean |
| Promotion of absorption of drugs administered through the alimentary system (US Patent 4501734/1985) | |
| Triterpene derivative and medicinal composition (US Patent 5885992/1999) | |
| Multicomponent clostridial vaccines using saponin adjuvants (US Patent 6083512/2000) | |
| Steam generator (US Patent 7074234/2006) |
| November 2007 at seaside forest edge |
| January 2007 at lowkand forest edge |
| January 2007 at lowland village |
January 2007 at lowkand forest edge |
January 2007 at lowland village |