| Family | Trochodendraceae |
| Scientific name | Trochodendron aralioides Siebold & Zuccarini |
| Synonyms | none |
| Common name | (Japanese common name) yama-guruma [mountain wheel] |
| (English common name) wheel tree | |
| Distribution | (Japan) Honshu (west of Yamagata Prefecture), Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan | |
| Chromosomal number | 2n=40 |
| Description | Plants 20m tall. Leaves 5-11cm long. Flowers green inflorescences 5-100cm long, flowering in May. Evergreen. Arbor trees. |
| Reference | Trochodendron aralioides Siebold & Zucc. |
| Trochodendron aralioides Siebold & Zuccarini | |
| Betulinol derivatives (US Patent 6890533/2005) | |
| Transgenic expression of a phytochrome a gene (US Patent 7271004/2007) | |
| Anti-HIV-1 activity of betulinol derivatives (WIPO Patent WO/2005/112929) | |
| Betulinol derivatives as anti-HIV agents (WIPO Patent WO/2006/031706) |
| April 2008 at Tsukuba Botanical Garden |
April 2008 at Tsukuba Botanical Garden |
April 2008 at Tsukuba Botanical Garden |