A. Twigs long, drooping.
Weeping Willow.
AA. Twigs erect.
B. Leaves white beneath.
C. Twigs yellow in spring; leaves narrow.
Golden Osier Willow.
CC. Twigs reddish in spring; leaves broad.
Pussy Willow.
BB. Leaves not white beneath; heart-shaped frill at base of leaf stem.
Black Willow.