| Family | Cyperaceae |
| Scientific name | Carex sacrosancta Honda var. tamakii (T. Koyama) T. Koyama |
| Synonyms | Carex tamakii T. Koyama |
| Common name | (Japanese common name) okinawa-hime-nakiri (オキナワヒメナキリ, 沖縄姫菜切 [meaning: Okinawa tiny nakiri-suge (nakiri-suge = Carex lenta)]) |
| (English common name) none | |
| Distribution | (Japan) Okinawa |
| (Other nations) none | |
| Habitat | Mountane streamside rocks |
| Chromosomal number | unknown |
| Description | Culms ca. 40-60cm tall. Leaves 35-60cm long, ca. 1.5-2mm wide. Flowers spikelets ca. 1-2cm long, flowering in September to October. Perennial plants. |
| Reference | Carex sacrosancta var. tamakii (T. Koyama) T. Koyama |
| Note | Endemic to Japan. Rare species. |
| September 2009 at Tsukuba Botanical Garden |
September 2009 at Tsukuba Botanical Garden |
September 2009 at Tsukuba Botanical Garden |