| Family | Juncaceae |
| Scientific name | Juncus prismatocarpus R. Brown |
| Synonyms | Juncus leschenaultii J. Gay ex Laharpe; Juncus leschenaultii J. Gay ex Laharpe var. radicans Franchet & Savatier; Juncus prismatocarpus R. Brown var. leschenaultii (J. Gay ex Laharpe) Buchenau; Juncus prismatocarpus R. Brown var. leschenaultii subvar. unitubulosus Buchenau; Juncus prismatocarpus R. Brown var. leschenaultii subvar. unitubulosus Buchenau forma radicans Buchenau & Nemoto |
| Common name | (Japanese common name) kogai-zekisho [kogai shaped sekisho like weed (kogai = a traditional hairdressing tool, sekisho = Acorus gramineus Solander ex Aiton)] |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (far east), Korea, China, Taiwan, Philippines, Vietnam, Thailand, Laos, Cambodia, Malaysia, Indonesia, Papua New Guinea, Australia, New Zealand, Nepal, Bhutan, India, Sri lanka, Pakistan | |
| Chromosomal number | unknown |
| Description | Plants red or green electing 20-40cm. Leaves 2-3mm width. Flowers pale green tepals 3-3.5mm length, flowering in May to July. Fruits 4-4.5mm length. Perennial plants. |
| Reference | Juncus prismatocarpus R. Br. |
| Juncus prismatocarpus R. Brown |
| May 2007 at lowland marsh |
May 2007 at lowland marsh |
May 2007 at lowland marsh |
| May 2007 at lowland marsh |
May 2007 at lowland marsh |
May 2007 at lowland marsh |