Passion flower (Passiflora incarnata).
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Passion flower is a perennial climbing vine with herbaceous shoots and a sturdy woody stem that grows to a length of nearly 30 ft. The ripe fruit is an egg-shaped berry that may be yellow or purple. Some kinds of passion fruit are edible. It is a naturally grown medicinal herb to treat insomnia and nervousness. Passionflower is native to southeast U.S. to Argentina and Brazil.