In many parts this resembles C. lanceolata, its main distinction being
implied by its name. The flowers are larger and the ray florets more
deeply cut; it is also bolder in the foliage, and the stems grow nearly
as strong as willows. It is an abundant bloomer, and a good specimen is
a glorious object during the autumn. It comes from North America, but my
experience of it is that it is not so hardy as C. lanceolata and C.
auriculata.
Habit, uses, culture, and propagation, as for C. lanceolata.