Pinnate
/PIN-ayt/🍃 Leaf Shapes●● Intermediate
Also known as: feather-like
A compound leaf arrangement where leaflets are arranged along both sides of a central rachis, resembling the structure of a feather. Can be even-pinnate (ending in a pair) or odd-pinnate (ending in a single terminal leaflet).
Etymology
From Latin pinnatus, meaning "feathered," from pinna (feather).
Example
“Ash trees have pinnate leaves with 5-9 paired leaflets along each rachis.”