| Family | Cyperaceae |
| Scientific name | Carex gifuensis Franchet |
| Synonyms | Carex fusanensis Ohwi |
| Common name | (Japanese common name) kuro hina-suge [black tiny sedge] |
| (English common name) none | |
| Distribution | (Japan) Honshu (Iwate Prefecture, Tochigi Prefecture, Gunma Prefecture, Gifu Prefecture, Mie Prefecture), Shikoku (Ehime Prefectue) |
| (Other nations) none | |
| Chromosomal number | 2n=42 |
| Description | Leaves 1.5-2.5mm width. Calms 15-30cm. Flowers male sikelet at top 1-1.5cm, female spikelet 5-10mm at side, flowering in April to June. Perennial plants. |
| Reference | Carex gifuensis Franch. |
| Note | Native to Japan. Relatively rare. |
| April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |
| April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |
April 2007 at Nikko Botanical Garden |