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| May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
| Family | Lamiaceae (alt. Labiatae) |
| Subfamily | Ajugoideae |
| Scientific name | Ajuga yezoensis Maximovicz ex Franchet & Savatier var. tsukubana Nakai |
| Synonyms | Ajuga tsukubana (Nakai) Okuyama ex Murata & T.Yamazaki |
| Common name | (Japanese common name) tsukuba kin-mon-sou (ツクバキンモンソウ, 筑波金紋草 [meaning: Mt. Tsukuba golden emblem weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Kanto region) |
| (Other nations) none | |
| Habitat | Mountane forest edge |
| Chromosomal number | 2n=32 |
| Description | Plants 5-15cm tall. Leaves 2-6cm long, 1-3cm wide. Flowers corollas 11-13mm long, upper petals 1mm long, flowering in April to May. Perennial plants. |
| Note | Native to Japan. |
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| May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
May 2007 at Mt. Tsukuba |
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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
