Lakeside Dividing Line is medium in size. It has an upright growth pattern but the leaves are not ridged. They tip slightly at the end. There is some rippling on the edges of the leaves also. It makes a graceful plant with lilac flowers. The flower scapes are bright green some showing white streaks. It is vigorous and clumps quickly.
The narrow white center that contrasts the wide, dark green margin produces a striking effect.