The leaves are doubly serrated and three lobed, and cordate-ovate.
"Hardy Ornamental Flowering Trees and Shrubs" by A. D. Webster
The leaves are cordate, ovate, and entire, nearly 2in.
"Hardy Perennials and Old Fashioned Flowers" by John Wood
It has been perpetuated in cordate, not in dactylate characters.
"The Atlantic Monthly, Volume 14, No. 83, September, 1864" by Various
Leaves are amplexicaul and cordate at the base.
"A Handbook of Some South Indian Grasses" by Rai Bahadur K. Ranga Achariyar
Leaves of medium size, thick, smooth, leathery, cordate, as broad as long, with a serrate margin.
"Manual of American Grape-Growing" by U. P. Hedrick
Leaves ovate, rounded or cordate at the base, 2-5 cm.
"The Plants of Michigan" by Henry Allan Gleason
The leaves are ovate-lanceolate, pointed, and cordate.
"Forest Trees of Illinois" by Fuller George D.
Later in the season, the large cordate leaves are quite conspicuous, and cause people to wonder what may have been the flower of so fine a vine.
"The Wild Flowers of California: Their Names, Haunts, and Habits" by Mary Elizabeth Parsons
Leaves alternate, mostly cordate; stipules none.
"The Manual of the Botany of the Northern United States" by Asa Gray
The bark is rough and thick, and the leaves cordate, unequally serrated, and very rough.
"Woodland Gleanings" by Charles Tilt