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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Gomphrena
n : genus of tropical herbs or subshrubs having flowers in close
heads; tropical America and Australia [syn: genus
Gomphrena]