Parnassia foliosa; white-beard grass
A species of flowering herb in the family Celastraceae, native to Japan. The name literally means 'white beard grass', referring to the fringed petals.
Parnassia foliosa is a perennial herb that grows in wetlands.
In autumn, the white flowers of Parnassia foliosa bloom.
Katakana spelling is common for plant names; usually written in kana.
Kanji spelling is rare; the plant is almost always written in kana.
The name シラヒゲソウ (白髭草) literally means 'white beard grass', from the appearance of the fringed petals. The exact derivation is uncertain, but it is a native Japanese plant name.