Leaf Venation
Pinnate
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Palmate
Reticulate
Dichotomous
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Parallel
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Leaf Venation
Pinnate
Leaf veins are produced on either side of the central main vein (midrib), which
extends from the petiole to the leaf tip.
Lateral
vein
Midrib
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Sublateral
vein
Petiole
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Leaf Venation
Palmate
The main veins radiate from a central point at the petiole. Each main vein
extends from the petiole to the tip of a lobe.
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Leaf Venation
Reticulate
Reticulate or net-veined leaves have many branched minor veines.
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Leaf Venation
Dichotomous
This type of venation occurs in Gingko. Numerous veins radiate from the base
of the leaf that branch near the upper leaf surface to form a Y.
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Leaf Venation
Parallel
Leaves with parallel venation are diagnostic for monocots. The veins extend
parallel to the outer leaf edge and each other.
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