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birth'wort fam"ily

the plant family Aristolochiaceae, typified by mostly tropical woody vines and herbaceous plants, having alternate, heart-shaped leaves and flowers lacking true petals but having three petallike sepals, and including the birthwort, Dutchman's-pipe, and wild ginger.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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