A bipinnate leaf is pinnately compound
but the leaflets are further divided into pinnule. The rachis is
the main stalk of the compound leaf. The stalk below the first leaflets
is the petiole of the leaf.
This picture shows the rachis, petiole and binnate
leaflet of a bipinnate compound leaf. The leaf is from China Doll
(Radermacha)
This picture shows pinnule, rachis and the petiole
of a bipinnate leaf.
This plant is a Silk Oak (Grevillia robusta), The
leaf is divided into 26 leaflets. Each leaflet is further divided.
Red arrow is pointing to a leaflet.
