|Clematis heracleifolia is a semi-woody perennial that belongs to AHS group 3. 1 1/4 inch long single flowers are produced from summer to fall on present year's growth. Leaves are toothed, 4 to 6 inches long and divided into 3 lobes. C. herecleifolia is a lovely addition to a perennial border, though it does need some support. Native to China.