| Family | Cyperaceae |
| Scientific name | Schoenoplectus juncoides (Roxburgh) Palla |
| Synonyms | Scirpus juncoides Roxburgh; Schoenoplectus juncoides (Roxburgh) Palla var. juncoides; Schoenoplectus juncoides (Roxburgh) Palla subsp. juncoides; Scirpus rockii Kükenth |
| Common name | (Japanese common name) inu-hotaru-i (イヌホタルイ, 犬蛍藺 [meaning: false glowfly rush]) |
| (English common name) rock bulrush | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China, Taiwan, Philippines, Thailand, Malaysia, Indonesia, Australia, Micronesia, Bhutan, Nepal, India, Sri Lanka, Pakistan, Iran, Caucasus, Madagascar | |
| Habitat | Swamp |
| Chromosomal number | 2n=74 |
| Description | Plants culms 18-70cm tall. Flowers spikelets 9-18mm long, 2 stigmas (merely 3 stigmas), flowering in July to October. Annual plants. |
| Reference | Schoenoplectus juncoides (Roxb.) Palla |
| Schoenoplectus juncoides (Roxb.) Palla |
| September 2006 at lowland swamp |
September 2006 at lowland swamp |
September 2006 at lowland swamp |