Crab apple leaves are arranged alternately on the stem. This means that each leaf grows from a different point along the stem, rather than directly across from another leaf. The alternate arrangement is common in many tree species, including crab apples.
They're alternate.
They're alternate.
The hackberry leaf is alternate.
Alternate...
Shagbark Hickory has an alternate leaf arrangement.
Alternate
Alternate
A maple leaf is normally opposite, where leaves are positioned directly across from each other on the stem.
Oppsite
Pin Oak leaves are simple and alternate.
Malus fusca
A poplar leaf is alternate, meaning it is arranged along the stem in a staggered pattern, with one leaf emerging from each node.