There are two types of flowers according to the arrangement on the inflorescence
(i) Whorl flowers: Flowers whose petals are arranged in whorls on the petals are called Whorl flowers. For example, china rose.
(ii) Perennial flowers: Flowers whose petals are spirally arranged on the petals are called perennial flowers. For example, Champaflower.

If multiple carpels are connected to each other in a flower, it is called compound gamous flower. For example – Dhutura, Eggplant.

A flower with multiple septa separated from each other is called a open gamous flower. For example, gold printing.

A flower having more than three stamens is called a multigamous flower. For example – China rose.

A flower which has two stamens is called a digamous flower. For example, mustard.

A flower having only one stamen is called a monogamous flower. For example, beans.

(i) Monogamous : A flower having only one stamen is called a monogamous flower. For example, beans.
(ii) Digamous : A flower which has two stamens is called a digamous flower. For example, mustard.
(iii) Trigamous : A flower having three stamens is called a trigamous flower. For example, onions, red leaves etc.
(iv) Polygamous: A flower having more than three stamens is called a multigamous flower. For example – china rose.
(v) Open gamous : A flower with multiple septa separated from each other is called a open gamous flower. For example, gold printing.
(vi) Compound gamous: If multiple carpels are connected to each other in a flower, it is called compound gamous flower. For example – Dhutura, Eggplant.

The number of stamens of a flower is 5 or a multiple of 5 is called Pentamerous. Flowers of dicotyledonous plants are pentamerous. For example – Jawa.

A flower having three stamens is called a trigamous flower. For example, onions, red leaves etc.

The number of stamens of the flower is 4 or a multiple of 4 is called Tetramerous. Flowers of dicotyledonous plants are Tetramerous. For example, paint.