|'Marie Boisselot' is also sometimes listed as 'Mme.le Coultre' Deciduous, vigorous climber belonging to AHS group 2. Large, 6 to 7 inch wide summer flowers are borne on sideshoots growing from last year's shoots. Additional blooms may be borne on the tips of the present year's growth. Leaves are divided into 3 widely or regularly lance-shaped leaflets, 4 to 6 inches long. Beautiful along fences and arbors. Part shade is preferable.