Flower Parts

                     Floral Parts and its Function 

Calyx

     The outer whorl of flower is called calyx.It consists of sepal.Calyx is usually green.It is present in most of flower.It is protective sheath of flower.Their are flowing descriptive terms of calyx.

Caducous: If the sepals are fall as soon as flower is open it is called cadocous. Example poppy.

Deciduous:Sepal which are fall when the flower is withers this condition is known as deciduous.Example buttercup. 
Persistant: If the sepal is remain in place even after fruit is formed.Example pea , roses and cotton.This contention is persistant in these plants 

Petaloid: If the sepal is coloured like petal this is called petaloid. Its example is Larkspur.sepal have 
Polysepalous: In this condition all the sepal are free from each other. Example of polysepalous is Brassica. Gamosepalous: All sepal is united. They have different structure .Tubular which is long and tube like. Globose which have glob shape.  Hooded one or more sepal forms hood like structure.

  Corolla 

     Corolla is second whorl of the flower.It contain petal.The collective name of petal is called corolla.It is attract the insect to word it self.Insect help the flower for pollination. They  bring pollen grain from one flower to an other.In the corolla foll following terms are used.

     Caducous: Condition in which petal falls as soon as flower open.Its example is Buttercup. 
Sepaloid: If the corolla is sepal like.Corolla colour is similar with the sepal. 
Polypetalous: The petal are free form each other.Example is brassica. Different terms are used  Clawed petals are narrow at base of expanded  at the tip. The tip of petals are short and narrow on the tip. Different terms of polypetalous is used. These terms are 
     Cruciform(کراس): The corolla is consists of four clawed petals. These petals are arranged in the form of cross.  They look like cross shape.  Example  of  cross form is Musterd family.

Rosaceous: Petals are five in number. They have very short claws.Rose is the example of rosaceous. Carylophallaceous: In this case calyx are form long tube It contain five petal. These petals are spread

Gymopetalous :The petals are united with each other.The petal are not similar. They are found in pea

Arrangement of Sepals and Petals 

Aestivation The arrangement of  sepals and petals with respect to one an other is called Aestivation. It has many types..Open The sepal and petals are not meet with each other at any end. Valvate Sepal and petals are merely touch each other at their edge.It is attach on some point with with one another. Twisted In this case margin of petals overlaps the margin of next petal.The next overlap with third one. Quincunicial This is imbricate aestivation with five petals.Two are exterior and two is interior.The fifth has one margin exterior and other is interior. Vexillary Imbericate with five petal. The posterior petal is largest. It covers the  two lateral petals. The lateral petal or wings overlap the interior and smallest petals (keels). Its present in Papilionacae.

Corona

In some flower small outgrowth or ligules are developed in a circle on the corolla.Such outgrowth are called corona.The corona may be free.