net venation
broad leaves with branching veins
Net venation is a term used to describe the pattern of veins in a leaf. It refers to the arrangement of the veins in a network-like pattern, where smaller veins branch out from a central midrib and then join again to form larger veins near the edge of the leaf. The net venation pattern can be further classified as either pinnate or palmate.
Pinnate net venation refers to a pattern in which there is one main vein (the midrib) running down the center of the leaf, with smaller veins branching off from it in a feather-like pattern. Pinnate venation is typically found in dicotyledonous plants, which are characterized by having two seed leaves.
Palmate net venation refers to a pattern in which several major veins emanate from the base of the leaf and branch out like fingers on a hand. Palmate venation is typically found in monocotyledonous plants, which have only one seed leaf.
The net venation pattern plays an important role in the function of the leaf. The veins in the leaf transport water and nutrients to the various parts of the leaf, and the arrangement of the veins helps to maximize the surface area available for photosynthesis. By understanding the net venation pattern, botanists can identify and classify different plant species based on their leaf morphology.
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