The leaves are very large, pedate, dentate, and distinctly veined.
"Hardy Perennials and Old Fashioned Flowers" by John Wood
Pedate: foot-bearing, or having feet.
"Explanation of Terms Used in Entomology" by John. B. Smith
They are coarse perennial herbs with palmately or pedately lobed leaves.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2" by Various