| Family | Cyperaceae |
| Scientific name | Fimbristylis littoralis Gaudich. |
| Synonyms | Fimbristylis miliacea (L.) Vahl |
| Common name | (Japanese Common Name) hideri-ko [drought children] |
| (English Common Name) grasslike fimbry, grass-like fimbristylis, lesser fimbristylis | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu, Okinawa |
| (Other Nations) worldwide throughout tropic, subtropic and warm-temperate regions. | |
| Chromosomal number | 2n=10 |
| Description | Plants culms 10-40cm tall. Flowers spikelets 2.5-3.3mm, flowering in July to October. Annual plants. |
| Reference | Fimbristylis littoralis Gaudich. |
| Fimbristylis littoralis Gaudich. | |
| Fimbristylis miliacea (L.) Vahl |
| September 2006 at lowland swamp |
September 2006 at lowland swamp |