| Family | Poaceae (alt. Gramineae) |
| Scientific name | Cynosurus echinatus L. |
| Synonyms | Falona echinata (L.) Dumortier; Phalona echinata (L.) Dumortier |
| Common name | (Japanese common name) hige-gaya [hairy sedge] |
| (English common name) bristly dogstail grass | |
| Distribution | (Japan) Hokkaido, Honshu, Kyushu |
| (Other nations) [native] Russia, India, Caucasus, Iran, Iraq, Israel, Lebanon, Syria, Turkey, Cyprus, Moldova, Ukraine, Romania, Albania, Italy, Portugal, Spain, Algeria, Morocco, Tunisia | |
| Chromosomal number | 2n=14 |
| Description | Culms 10-100cm tall. Leaves 5-20cm long, 3-10mm wide. Flowers inflorescences 1-8cm long, 1-2cm wide, spikelets 6-14mm long, flowering in May to July. Annual plants. |
| Reference | Cynosurus echinatus L. |
| Cynosurus echinatus L. | |
| Cynosurus echinatus L. | |
| Cropping systems for managing weeds (WIPO Patent WO/2008/051633) | |
| Note | Naturalized plants (first collected in 1957) |
| June 2008 at seaside pine forest |
June 2008 at seaside pine forest |
June 2008 at seaside pine forest |
| June 2008 at seaside pine forest |