| Family | Eriocaulaceae |
| Scientific name | Eriocaulon cinereum R. Brown |
| Synonyms | Eriocaulon cinereum R. Brown var. sieboldianum (Siebold & Zuccarini ex Steudel) T. Koyama; Eriocaulon formosanum Hayata; Eriocaulon heteranthum Bentham; Eriocaulon sieboldianum Siebold & Zuccarini ex Steudel |
| Common name | (Japanese common name) hoshi kusa (ホシクサ, 星草 [meaning: stars grass]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Philippines, Thailand, Vietnam, Indonesia, Cambodia, Laos, Myanmar, Nepal, Bhutan, India, Sri Lanka, Pakistan, Afghanistan, Australia, Africa | |
| Habitat | Swamp, rice paddy |
| Chromosomal number | unknown |
| Description | Leaves linear 2-8cm long, 1-2mm wide. Scapes 5-20cm tall Flowers white or gray head ca. 4mm across, flowering in August to September. Seeds ca. 0.4mm long. Annual plants. |
| Reference | Eriocaulon cinereum R. Brown |
| September 2006 at lowland marsh |
September 2006 at lowland marsh |
September 2008 at Ushiku Forest Park |
| September 2006 at lowland marsh |