| Family | Caryophyllaceae |
| Subfamily | Alsinoideae |
| Tribe | Alsineae |
| Scientific name | Moehringia lateriflora (L.) Fenzl |
| Synonyms | Arenaria lateriflora L.; Arenaria lateriflora L. var. angustifolia (Regel) H. St. John; Arenaria lateriflora L. var. tayloriae H. St. John; Arenaria lateriflora L. var. tenuicaulis Blankinship; Moehringia lateriflora (L.) Fenzl var. angustifolia Regel |
| Common name | (Japanese common name) oh-yama-fusuma (オオヤマフスマ, 大山衾 [meaning: large maoutain fusuma (fusuma = Stellaria alsine var. undulata)]) |
| (English common name) bluntleaf sandwort, blunt-leaf grove-sandwort, grove sandwort | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, Korea, China, Mongolia, Kazakhstan, Southwestern Asia, Europe, Canada, USA | |
| Habitat | (Hokkaido) field, seaside; (Honshu, Shikoku, Kyushu) subalpine or mountane field |
| Chromosomal number | 2n=48 |
| Description | Plants 10-20cm tall. Leaves 1-2.5cm long. Flowers 5 white petals each 5-8mm long, flowering in June to August. Perennial plants. |
| Reference | Moehringia lateriflora (Linnaeus) Fenzl |
| Moehringia lateriflora (L.) Fenzl | |
| Sexual Polymorphism in Moehringia lateriflora (Caryophyllaceae) |
| June 2008 at Senjogahara swamp |
June 2008 at Senjogahara swamp |
June 2008 at Senjogahara swamp |