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| any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower | ||||
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| common American spring-flowering woodland herb having sheathing leaves and an upright club-shaped spadix with overarching green and purple spathe producing scarlet berries ❲Arisaema triphyllum, Arisaema atrorubens❳ |