Clematis x eriostemon (syn. Clematis × diversifolia, Clematis hendersonii,Clematis x diversifolia ‘Hendersonii’), early June. A deciduous, scrambling climber bearing pinnate, dark green leaves with lance-shaped leaflets and, in summer and autumn, solitary, bell-shaped, deep purple-blue flowers with recurved petals and creamy yellow anthers. The original plant was a hybrid of C. viticella and C. integrifolia in 1835.