||Of leaves that have a distinct
sharp angled edge fold along the midrib or in the bottom,
resembling the keel of a boat.
Keeled leaves are frequently found among succulent plants
belonging to the Aizoacee family. The particular shape of the
keels is a distinctive characteristic useful for plant
classification end identification. Different keels may or may
not carry indentation, serration, be very sharp or rounded etc.
Left: keeled leaves of