A plant ’s leaf is attach to its stem at the leaf base , or leaf leafstalk . Plants have many dissimilar leaf arrangements , but those with three role fall down into the family of either chemical compound leaves with three clear-cut sections to their folio link up at each leaflet ’s petiole , or lob leafage with two or more distinct lobe on the leaf margin and a undivided leafage leafstalk .
Leaf Parts
The easiest way to key out a leaf is by the specific traits of certain role of the folio . The right term for these traits are fundamental to using a guide for plant identification . The petiole is the part of the leaf stem or mid - costa at the fundament of the leaf where it unite the trunk theme . The folio margin is the very edge of the folio which can be smooth or entire , serrate like a tongue border , ondulate or more or less wavy , or lacinate with diminutive lobes . The foliage margin can also have large lobes , which are often entire but are sometimes slenderly serrated .
Compound Leaves
chemical compound leaves are clear-cut from each other , and yet seize to only one prow at each leaflet ’s petiole . Each of the small leaves that make up the chemical compound leafage is call a cusp . chemical compound leaves can have as few as three leaflets , or many more attached to a individual long stem . The pamphlet look like discrete leaves , but since the leaflet share a plebeian prow , they are grouped into a compound leaf group .
Compound Leaf Examples
mutual type of trifoliate compound parting admit clover and strawberry leaves . Some trees , such as the box elder , have trifoliate chemical compound leaves , while others , such as the black walnut tree and ailanthus , have compound leave with many more leaflets .
Lobed Leaves
lobate leaves are individual leaves on a single stem that have distinct sections with several vena ramify out from the leaf leafstalk to the leaf tolerance . Each of these veins end at the tip of a distinct foliage lobe . leaf can have a single main vein which little veins branch off , or they can have two or more main vein , in which vitrine they are called palmate leafage .
Lobed Leaf Examples
Lobed leaves are also very unwashed ; most maple leave with three distinct and often serrate lobes are an example of leave-taking with three lobes . Some plants , such as the sassafras tree , can also have several different leaf - types . The sassafras tree exhibits leaf without any lobe , with two lobes and also with three lobe often all on the same tree diagram . Fig tree leaves also unremarkably have three to five discrete lobes on each leafage with margins which are sometimes entire , and sometimes ondulate .
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