Clematis 'Kathleen Dunford' is a deciduous climber which produces a profusion of unique, rich rosy-purple, semi-double flowers, 6-8 in. across (15-20 cm), adorned with golden filaments and dark red anthers. As the flowers mature, the tepals become mottled and mauvish-blue at the margins. Flowering comes in two waves: first in late spring to early summer, then in late summer to early fall.