| Family | Betulaceae |
| Family | Coryloideae (also placed in Corylaceae) |
| Scientific name | Corylus sieboldiana Blume |
| Synonyms | Corylus heterophylla Fischer ex Trautvetter var. sieboldiana de Candolle; Corylus rostrata Aiton var. mitis Maximowicz; Corylus rostrata Aiton var. sieboldiana (Blume) Maximowicz; Corylus sieboldiana Blume var. mitis (Maximowicz) Nakai; Corylus sieboldiana Blume var. typica Nakai |
| Common name | (Japanese common name) tuno hashimbami (ツノハシバミ, 角榛 [meaning: horns hazel]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Korea | |
| Chromosomal number | 2n=28 |
| Description | Plants 4-5m tall. Leaves 5-11cm long. Flowers flowering in March to April. Deciduous. Shrub. |
| Reference | Corylus sieboldiana Blume var. sieboldiana |
| Corylus mandshurica Maximowicz | |
| Soil improver with white-rot fungi and methods of using thereof for plant restoration and recover of heavy metals contaminated soil around abandoned mine area (WIPO Patent WO/2007/111479) | |
| Note | Corylus mandshurica Maximowicz also can be found in Japan. Corylus mandshurica Maximowicz is not a synonym of Corylus sieboldiana Blume. |
| March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |
| March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |
| March 2007 at Tsukuba Botanical Garden |
| July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
June 2007 at Tsukuba Botanical Garden |
| March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |