Appearance
It has large, arrow-shaped leaves and showy white trumpet-shaped flowers up to 9 centimeters in diameter. It is considered a weed in some areas where it has escaped cultivation and now grows wild. It spreads easily via hardy rhizomes. There are several subspecies.Distribution
It is native to southern Europe but has been introduced to many other areas because it is an attractive garden plant. ''Calystegia silvatica'' subsp. ''fraterniflora'' Brummitt is native to North America.References:
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