opposite leaf arrangement

plant anatomy

Also known as: paired leaf arrangement

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Last updated

July 1, 2026

Quick Summary

In plant anatomy, "opposite-leaved" describes plants where leaves are arranged in pairs at each node, directly across from each other on the stem. This arrangement is one of the three primary patterns of leaf arrangement, alongside alternate and whorled. The stem itself is the main axis of a plant, supporting leaves and conducting essential substances like water, minerals, and food throughout the plant. Stems also play a role in food storage and, if green, in photosynthesis. The arrangement of leaves on the stem, known as phyllotaxis, is crucial for optimizing light absorption.12

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angiosperm
Leaves
In opposite-leaved plants, the leaves are paired at a node and borne opposite to each other. A plant has whorled leaves when there are three or more equally spaced leaves at a node.
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In opposite-leaved plants, the leaves are paired at a node and borne opposite to each other. A plant has whorled leaves when there are three or more equally spaced leaves at a node.
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Myrtales
Characteristic morphological features
…borne on the stem, and opposite leaves are borne on the flowering shoots. In Eucalyptus, young branches have opposite leaves, whereas the leaf arrangement on older branches is alternate.
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…borne on the stem, and opposite leaves are borne on the flowering shoots. In Eucalyptus, young branches have opposite leaves, whereas the leaf arrangement on older branches is alternate.
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