Parnassia palustris (Plum blossom) - Parnassia palustris (English spelling)

Japanese: ウメバチソウ(梅鉢草) - ウメバチソウ（英語表記）Parnassia palustris

A perennial plant of the Saxifragaceae family, it grows in sunny wetlands in mountains and plateaus. It has a short rhizome and densely packed basal leaves with long petioles. The leaves are heart-shaped and 1-3 cm in diameter. From August to October, several flower stalks emerge from the rhizome, each with a single white flower at the end. The flower stalk has a single sessile, egg-shaped stem leaf. The flower has five sepals, five petals, five stamens, a spherical ovary and a four-pronged style. The flower's shape resembles the crest of a plum blossom, hence the name. Closely related species include Shirahigesou, whose petals have deeply lobed, thread-like edges, and Himeumebachisou, which is slightly smaller and grows in alpine zones.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

ユキノシタ科の多年草で，山地や高原の日当りのよい湿地に生える。根茎は短く，長い葉柄をもつ根出葉を密につける。葉は径1～3cmのハート形。8～10月頃，根茎から数本の花茎を出し，先端に1個ずつ白い花をつける。花茎には無柄で卵形の茎葉が1枚つく。花は萼片，花弁各5枚，おしべ5本，子房は球形で花柱は4本に分れる。花の形が梅鉢の紋に似ているのでこの名がある。近縁のものには花弁の縁が糸状に深く裂けたシラヒゲソウ，高山帯に生えるやや小型のヒメウメバチソウなどがある。

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