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Clematis Montana. Small, flattish, faintly scented, semi-double, flowers that are pale creamy yellow at the centre of the tepal, shading through pale pink to a deep pink margin. Yellow anthers on white filaments. Deciduous

So named because of the similarity of the flowers to the Pied Piper of Hamelin’s "gypsy coat of red and yellow" in Robert Browning's poem.