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| May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
May 2008 at Mt. Tsukuba |
| Family | Lamiaceae (alt. Labiatae) |
| Subfamily | Ajugoideae |
| Scientific name | Ajuga incisa Maximovicz |
| Synonyms | none |
| Common name | (Japanese common name) hiiragi-sou (ヒイラギソウ, 柊草 [meaning: holly tree leaved weed]) |
| (English common name) blue enigma | |
| Distribution | (Japan) Honshu (Kanto region, Central region) |
| (Other nations) none | |
| Habitat | Subalpine forest edge or field |
| Chromosomal number | 2n=32 |
| Description | Plants electing 30-50cm tall. Leaves 5-10cm long, 3-6cm wide. Flowers blue purple corollas ca. 2cm long, flowering in May to June. Perennial plants. |
| Reference | Comparative karyological studies in ten Ajuga species in Japan, Lamiaceae (Labiatae) |
| Note | Native to Japan. Rare species. |
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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 |
May 2008 at Mt. Tsukuba |
