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Fumariaceae A family of brittle-stemmed herbs that yield a watery juice and have much cut, alternate leaves. The flowers, borne in racemes, are usually 2-lipped with 2 small sepals and 4 petals, of which 1 or 2 are spurred. Several genera (e.g. Dicentra) are cultivated for their flowers. There are 18 genera, with about 450 species, found in northern temperate regions and in S. Africa.