ちょうせんれんぎょう (朝鮮連翹) [Index] [Back] 朝鮮半島が原産です。山地の森林に生え、高さは２〜３メートルになります。幹は株立ちして、枝はよく伸びて弓なりに下垂します。葉は楕円形でやや幅広く、表面は濃緑色、縁には鋭い鋸歯があります。３月から４月ごろ、葉の展開に先立って、前年枝の側芽から濃黄色の花を１〜３個咲かせます。花冠は直径３センチほどで４深裂します。果実は卵形の�刮ﾊで、１０月から１１月に熟します。 モクセイ科レンギョウ属の落葉低木で、学名は Forsythia viridissima var. koreana (syn. Forsythia koreana)。英名は Korean golden bell tree。 The Korean golden ball tree (Forsythia viridissima var. koreana) belongs to Oleaceae (the Olive family). It is a small deciduous tree that is native to the Korean Peninsula. It grows in mountainous forests and reaches a height of 2 to 3 m. The trunk grows in clumps, and the branches extend widely, arching downward. The leaves are elliptical and somewhat broad, with a dark green upper surface and sharp serrations along the margins. From around March to April, before the leaves unfurl, 1 to 3 deep yellow flowers bloom from lateral buds on the previous year's branches. The corolla is about 3 cm in diameter and deeply lobed into four parts. The fruit is an ovoid capsule that ripens from October to November. 茨城県つくば市「つくば実験植物園」にて、2026年03月28日撮影。 Shu Suehiro shu@botanic.jp