A legume native to China that is widely cultivated in gardens for its beautiful crimson-purple flowers that bloom in spring before the leaves appear. It was introduced to Japan during the Edo period. It is a deciduous tree that grows to a small tree about 4m in height. The bark is mostly gray. The leaves are heart-shaped, 4-8cm long, and have short, pointed tips. The upper surface is glossy, and the underside is slightly greenish-white. The flowers grow in clusters at nodes on the branches of the previous year, and are about 2cm long. They are very similar to the butterfly-shaped flowers of ordinary legumes, but the standard petals are located inside the wing petals on both sides, and these three petals are curled back. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
春,葉に先立って紅紫色の美花が咲くため,広く観賞用として庭園に栽培される中国原産のマメ科植物。日本へは江戸時代に渡来。高さ約4mほどの小高木となる落葉樹。樹皮はほとんど灰色。葉は心形で長さ4~8cm,先は短くとがる。表は光沢があり,裏面はやや緑白色。花は前年の枝上の節に束になってつき,長さ約2cm。ふつうのマメ科植物の蝶形花とよく似ているが,旗弁は両わきの翼弁よりも内側につき,この3枚がそり返っている。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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