Venation,Reticulate,Parallel,Calophyllum,Smilax,Multicostate,Unicostate,Monocots veins

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Morphology of Flowering Plants Morphology of Plants Characteristics of Root Root System Modifications of Root Systems Adventitious Root Roots Modified for Additional Support Roots Modified for Vital Functions Characteristics of Stem Kinds of Bud Modifications of Bud Types of Stems Aerial Modifications of Stem Plant Leafs Shapes of Lamina Leaves Venation Leaves Phyllotaxy Simple and Compound Leaves Functions of Leaves Importance of Studying Leaf Morphology

Home >> Biology >> Morphology and Anatomy of Flowering Plants >> Leaves Venation

Venation
Arrangement of veins in leaves is called venation. It is two types-reticulate and parallel.
1. Reticulate
It is found in dicot where main vein divide into branches to form net like structure. e.g. Mango and Peepal. When there is one midrib the leaf is unicostate in Mango. When there are many midribs the leaf is multicostate e.g. in Zizyphus, Cucurbita, Papaya. Exception: A dicot having parallel venation is Calophyllum.
2.Parallel
In monocots veins run parallel to each other.

Unicostate	Unicostate	Divergent
Unicostate Parallel Venations	Convergent Parallel Venations	Divergent Parallel Venations

Depending upon the number of midrib it is also of two types, unicostate, (Banana, Ginger) and multicostate (Grass, Rice, Borassus).
Exception:
A monocot having reticulate venation is Smilax.

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Anatomy of Flowering Plants Tissue and Meristematic Tissue Classification of Meristematic Tissue Apical Meristems of Stem and Root Permanent Tissue Simple Permanent Tissue Complex Tissues - Xylem Types of Xylum Complex Tissues - Phloem Classification of Permanent Tissue on Basis of Their Functions Types of Vascular Bundles Anatomy of Monocot Stem - Maize, Primary Structure of Stem Anatomy of Dicotyledonous Stem - Sunflower Stem Secondary Growth in Dicot System Origin and Activity of Cambium Origin and Activity of Cork Cambium Heart Wood and Sap Wood Primary Structure of Monocot Root Primary Structure of Dicot Root Secondary Growth in Dicot Roots Origin and Activity of Vascular Cambium Origin and Activity of Cork Cambiums Internal Structure of Dicot Leaf Internal Structure of Xerophytic Leaf Internal Structure of Monocot Leaf - Isobilateral Leaf