Describing a leaf that is divided into rounded or pointed segments called lobes, with indentations extending partway toward the midrib. Lobed leaves can be shallowly or deeply divided depending on how far the indentations extend.
From Greek 'lobos' meaning 'lobe' or 'rounded projection,' through Latin 'lobus.' The botanical application developed in the 18th century as leaf shapes were systematically categorized and described.
Lobed leaves are nature's compromise between having one big leaf and having many small leaflets! Oak leaves show this perfectly - the lobes increase surface area and reduce wind resistance while keeping everything connected to one petiole.
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