An 'accidental' hybrid, discovered around 1935 in the garden of Elisabeth Prentiss (USA). Grows to about 1.5 metres with large, dark green and glossy leaves. Small, fragrant flowers (up to 2 cm), light lavender-blue. Flowers are very abundant and densely arranged; flowering period only from July to August (October). Not suitable for potting. Low shrub with little lignification; prune towards the end of the year to about 60 cm above ground. For guidance on application, location, and suitable cable systems, refer to the shrub clematis general information.
(Lat: Clematis x jouiana 'Mrs Robert Brydon,' syn. C. heracleifolia, possibly hybrid of C. tubulosa x C. Virginiana)