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| October 2006 at Koishikawa Botanic Garden |
October 2006 at Koishikawa Botanic Garden |
October 2006 at Koishikawa Botanic Garden |
| Family | Acanthaceae |
| Subamily | Acanthoideae |
| Scientific name | Peristrophe japonica (Thunberg) Bremek |
| Synonyms | Dicliptera japonica Makino; Dicliptera japonica var. subrotunda Matsuda; Peristrophe japonica (Thunb.) Bremek var. subrotunda (Matsuda) Murata & Terao |
| Common name | (Japanese common name) haguro-sou (ハグロソウ, 葉黒草 [dark green leaves weed]) |
| (English common name) waterwillow | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan | |
| Habitat | Mountane forest |
| Chromosomal number | 2n=48 |
| Description | Plants electing 20-50cm tall. Leaves 5-10cm long (including petioles), 1-3cm wide, bracts 1-2.5cm long. Flowers calyx 2.5-3mm long, pale purple corollas 2.5-3cm long, 2 stamens, flowering in July to October. Fruits 2.5mm long. Perennial plants. |
| Reference | Dicliptera japonica (Thunb.) Makino |
| Delovery of small doses of ingestible treatments (WIPO Patent WO/2001/022934) |
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| October 2006 at Koishikawa Botanic Garden |
October 2006 at Koishikawa Botanic Garden |
October 2006 at Koishikawa Botanic Garden |
