These are the fruits of diospyros rhombifolia or commonly known as princess persimmon at the Koishikawa Botanical Garden in Tokyo. A few days ago, I wrote about diospyros cathayensis Steward (cathay persimmon). Both trees were side by side and the fruits resemble each other, so without the plant labels, I would have thought they were the same tiny persimmons. But there's an obvious difference between the two, which I couldn't see at that time. Princess persimmon is deciduous while cathay persimmon is evergreen. (Take a look at the second picture!)
Diospyros rhombifolia 老鴉柿(ロウヤガキ) |
Deciduous diospyros rhombifolia (left) and evergreen diospyros cathayensis 落葉樹の老鴉柿(左)と常緑樹の四川常盤柿 |
Princess persimmon is deciduous ロウヤガキは落葉樹 |
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小石川植物園の老鴉柿(ロウヤガキ)です。先日、四川常盤柿(シセントキワガキ)について書きました。二つの柿の木は並んでいて両方とも実はちっちゃく、名札がなければ異なる種類だとは思わなかったでしょう。でも明らかな違いがあるんです。分かりますか?
老鴉柿は落葉樹、四川常盤柿は常緑樹です。(2枚目をご覧あれ!)ちなみに老鴉柿は英語で「princess persimmon」とも呼ばれているようです。可愛いですね。
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