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Herbs, sometimes climbing; juice clear. Leaves alternate, much divided. Flowers in leaf-opposed racemes, zygomorphic, bisexual, hypogynous. Sepals 2, caducous. Petals 4, in two dissimilar whorls, one petal of the outer whorl spurred. Stamens 2. Ovary 1-locular. Fruit a 1-seeded nutlet.Trusted







