im·mor·telle /ˌɪˌmɔrˈtɛl/
  不彫謝的花
  Im·mor·telle n.; pl. Immortelles   Bot. A plant with a conspicuous, dry, unwithering involucre, as the species of Antennaria, Helichrysum, Gomphrena, etc. See Everlasting.
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  immortelle
       n : mostly widely cultivated species of everlasting flowers
           having usually purple flowers; southern Europe to Iran;
           naturalized elsewhere [syn: Xeranthemum annuum]