Blue daisy (English spelling)

Japanese: ブルー･デージー（英語表記）blue daisy

A shrub-like evergreen perennial plant of the Asteraceae family native to South Africa, it is generally cultivated as a potted plant in a greenhouse. Its Japanese name is Rurihinagiku. Improved varieties include a large-flowered tetraploid species and a variety with variegated leaves that are pale yellow in color. It branches well and grows to a height of about 30 cm when potted. The leaves are opposite, oval, and coarsely hairy. It produces flower heads with a blue-yellow center and a diameter of 2 to 2.5 cm at the top of the stem. The flower necks are long. It blooms almost year-round, but often blooms between June and October. It is sensitive to cold, so it should be protected in a greenhouse or other place to prevent it from freezing in winter.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

南アフリカ原産の灌木状のキク科の常緑多年草で，一般には温室鉢物として栽培されている。和名はルリヒナギク。改良品種には，大輪の四倍体種や，淡黄色斑入りとなる斑入葉品種もある。よく分枝して茂り，鉢植えでは高さ30cmぐらいとなる。葉は対生し，卵円形で粗毛がある。茎頂に青色黄芯の径2～2.5cmの頭状花を咲かせる。花首が長い。花期はほぼ周年であるが，6～10月の間によく咲く。寒さには弱く，冬季は凍らせないよう温室などで保護する。

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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