My mom has this variety in her garden. It's one of the Caladium bicolor varieties, also named Caladium hortulanum or Caladium x hortulanum -
http://commons.wikimedia.org/wiki/File:Caladium_hortulanum.jpg
See if this can help: Caladium bicolor - Common Names: caladium, fancy-leaved caladium, angel wings, heart of Jesus, elephant ears
Family: Araceae (arum Family)
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