Flower tube

Japanese: 花管 - かかん
Flower tube

...In the case of roses, the receptacle, which contains the calyx, corolla, stamens and pistils, is shaped like a bud, and contains several fruits. In pears and apples, the fruit in the strict sense is the hard central part, known as the core, and the outer edible part is a developed part called the floral tube, which is formed by the fusion of the calyx, corolla and base of the stamens. Flowers with this type of structure are widely seen in other flowers with inferior ovaries, such as pomegranates, cucumbers and bananas. ...

*Some of the terminology that refers to "flower tube" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…バラの場合には,萼,花冠,おしべやめしべがつく花托がつぼ状となっていて,その中に数個の実が入っている。ナシやリンゴでは狭義の実は中央部のいわゆる芯と呼ばれる堅いところで,外側の食べる部分は萼,花冠,おしべの基部が合着し筒状となった花管floral tubeと呼ばれる部分の発達したものである。このような構造をもったものは,他にもザクロ,キュウリ,バナナなど下位子房をもつ花に広くみられる。…

※「花管」について言及している用語解説の一部を掲載しています。

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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