| Family | Cyperaceae |
| Scientific name | Scleria parvula Steudel |
| Synonyms | Scleria biflora auct., non Roxburgh; Scleria fenestrata Francet & Savatier; Scleria koreana Pallas ex Nakai; Scleria tessellata auct., non Willdenow |
| Common name | (Japanese common name) ko-shinju-gaya (コシンジュガヤ, 小真珠萱 [meaning: small pearl rush]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Malaysia, Nepal, India, Sri Lanka | |
| Habitat | Swamp |
| Chromosomal number | 2n=30 |
| Description | Plants culms 25-60cm tall. Leaves 10-20cm long, 3-5mm wide. Flowers flowering in July to October. Annual plants. |
| Reference | Karyomorphological Studies of Four Species of Japanese Scleria (Cyperaceae) |
| August 2007 at lowland swamp |
August 2007 at lowland swamp |