| Family | Betulaceae |
| Scientific name | Alnus sieboldiana Matsumura |
| Synonyms | none |
| Common name | (Japanese common name) oh-ba yasha-bushi [broad leaved yasha fushi (yasha = Japanese pronunciation of yakkha, fushi = a traditional Chinese medicine which involves tannin)] |
| (English common name) none | |
| Distribution | (Japan) Honshu (Pacific Sea side of Kanto region, Cantral region, Kii Preninsular) |
| (Other nations) none | |
| Chromosomal number | 2n=112? |
| Description | Plants 5-10m. Leaves 6-12cm length. Flowers flowering in March. Deciduous. Arbor trees. |
| Reference | Alnus sieboldiana Matsum. |
| Compositions containing hypoglycemically active stillbenoids (US Patent 6410596/2002) | |
| Use of stilbene derivatives substituted in position 3 as deodorant active agents in cosmetic compositions (US Patent 6407142/2002) | |
| Compositions containing hypoglycemically active stilbenoids (US Patent 6552085/2003) | |
| Mold capable of degrading dioxin, degradation of dioxin with the use of the same, method for producing composts capable of degrading dioxin and method for growing plants (US Patent 6506956/2003) |
| February 2007 at Koishikawa Botanical Garden |
February 2007 at Koishikawa Botanical Garden |
February 2007 at Koishikawa Botanical Garden |
| February 2007 at Koishikawa Botanical Garden |
February 2007 at Koishikawa Botanical Garden |
| February 2007 at Koishikawa Botanical Garden |