Difference between Adnate And Connate

Adnation and connotation are two conditions in a flower where dissimilar and similar organs fuse together, respectively. Find out detailed differences between adnate and connate in the table below.

What is Adnate?

Adnate organs are the dissimilar organs that fuse together. The fusion of these dissimilar organs is referred to as adnation. In flowering plants organs like stamens, petals, sepals, etc fuse with other other forming adnate organs. For example: In Primula (primrose), the stamens are adnate to the petals.

What is Connate?

Connate organs are the similar organs that fuse together. The fusion of these similar organs is referred to as connation. When stamens fuse with each other, they form connate organs. The fusion of the sepals of a flower is called synsepalous, similarly, sympetalous is the fusion of petals. For example: the flowers of lavender (Lavandula angustifolia) are sympetalous in nature.

Adnate vs Connate




The dissimilar organs that fuse to each other are referred to as adnate organs.

The similar organs that fuse to each other are referred to as connate organs.

Type of Organ

It involves the union of organs that are different from each other.

It involves the fusion of organs that are similar in nature.


The stamen of a primrose flower is adnate to its petals.

The petals of a lavender flower fuse with each other to form a sympetalous condition.

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Frequently Asked Questions


What are free petals called?

When the petals of a flower are not fused, that is, they are free, it is referred to as a polypetalous flower.


What is adnate anther?

When an anther is attached to the whole length of its filament, it is called an adnate anther.


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