Alternate...
alternate
Alternate
It has simple alternate leaves
The Weeping Willow leaf (scientific name: Salix Alba 'Tristis') is actually a simple leaf. :) But because of its appearance on the branches, it is sometimes mistaken as a compound leaf instead.
it's opposite
They're alternate.
Weeping Willows belong to the tree family. Pussy Willows are not trees, they are simply plants. Weeping willows are the pendulous members of the Salix family. Pussy willows are the name for the flowers of the willow.
both of them are long
They're alternate.
The hackberry leaf is alternate.
both of them are long
Shagbark Hickory has an alternate leaf arrangement.
Alternate
Alternate