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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
| Family | Aristolochiaceae |
| Scientific name | Asarum tohokuense Yamaji & Teruko Nakamura |
| Synonyms | none |
| Common name | (Japanese common name) togoku-saishin (トウゴクサイシン, 東国細辛 [meaning: Togoku saishin (Togoku=an old name of Eastern Japan, saishin = a kind of Chinese traditional medicine)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region) |
| (Other nations) none | |
| Habitat | Mountane forest, forest edge |
| Chromosomal number | 2n=26 |
| Description | Plants creeping. Leaves 5-12cm wide. Flowers 15mm, flowering in April to May. Perennial plants. |
| Reference | Asarum sieboldii Miq. |
| Asarum sieboldii Miquel | |
| A Taxonomic Study of Asarum sect. Asiasarum (Aristolochiaceae) in Japan | |
| Note | I think that Asarum tohokuense Yamaji & Teruko Nakamura was previously identified as a local form of Asiasarum sieboldii (Miquel) F. Maekawa. |
| I think that Asarum tohokuense Yamaji & Teruko Nakamura should be classified as Asiasarum sieboldii (Miquel) F. Maekawa forma tohokuense. |
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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
