Caltha palustris (English name)

Japanese: リュウキンカ（英語表記）Caltha palustris

A perennial plant of the Ranunculaceae family, also called Enkousou. It grows in wetlands and flowing water in the cool temperate zone of the Northern Hemisphere. It has a short rhizome underground that produces thick roots. The stem is thick and fleshy, and the lower half of the stem grows along the ground. It takes root at each node. The basal leaves have long stalks, and the leaves are kidney-shaped, 4-8 cm in diameter, with low wavy sawtooth edges. The stem leaves have no stalks. Flowers bloom at the top of the stem in spring, usually in pairs. They have 5-7 yellow petal-like sepals, 2-3 cm in diameter, no actual petals, and many yellow stamens. After flowering, they produce pod-like capsules about 1 cm long. Note that marsh marigolds are those with upright stems that grow to about 30 cm in height, while those with stems that radiate along the ground and barely rise are called Enkousou, and are sometimes treated as separate species.

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

Japanese:

キンポウゲ科の多年草で，エンコウソウともいう。北半球冷温帯の湿地や流水中に生じる。地下に短い根茎があり，太い根を出す。茎は太く，多肉質で，下半部は地面をはうように伸びる。各節から根をおろす。根出葉には長い柄があって，葉は径4～8cmの腎円形で，縁に低い波状の鋸歯がある。茎葉には柄がない。花は春に茎頂に咲き，通常は2花ずつつく。黄色で花弁状の萼片が5～7片あって直径2～3cm，本来の花弁はなく，多数の黄色のおしべがある。花後に長さ 1cmほどの莢状の袋果をつける。なお，リュウキンカと呼ばれるのは茎が立上がって高さ 30cm前後になる形のもので，茎が地面を放射状にはい，ほとんど立上がらないものをエンコウソウといって区別し，それぞれ別品種に扱う場合もある。

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Dragon Palace - Ryugu

>>: Liu Jin; Liu Chin