● Based on Symmetry:
`star` `color{Brown}"Actinomorphic"` : When a flower can be divided into two equal radial halves in `color{Violet}"any radial plane"` passing through the centre, it is said to be `color{Violet}"actinomorphic"`
E.g.: mustard, datura, chilli.
`star` `color{Brown}"Zygomorphic"` : When it can be divided into two similar halves only in `color{Violet}"one particular vertical plane"`, it is `color{Violet}"zygomorphic"`.
E.g.: Pea, gulmohur, bean, Cassia.
`star` `color{Brown}"Asymmetric"` : A flower is `color{Violet}"asymmetric"` (irregular) if it `color{Violet}"cannot be divided"` into two similar halves by any vertical plane passing through the centre.
E.g.: Canna.
● Based on Number of floral appendages: A flower may be `color{Violet}"trimerous"`, `color{Violet}"tetramerous"` or `color{Violet}"pentamerous"` when the floral appendages are in multiple of 3, 4 or 5, respectively
● Based on presence or absence of Bract:
`star` `color{Brown}"Bract"` : The reduced leaf found at the base of the pedicel is called Bract.
`star` Flowers with bracts are called `color{Violet}"bracteate"` and those without bracts, `color{Violet}"ebracteate"`.
● Based on position of calyx, corolla and androecium in respect of the ovary on thalamus:
`star` `color{Brown}"Hypogynous"` :
● In the `color{Violet}"hypogynous"` flower the gynoecium occupies the `color{Violet}"highest"` position while the other parts are situated `color{Violet}"below"` it.
● The ovary in such flowers is said to be `color{Violet}"superior"`
.
● E.g.: Mustard, China rose and Brinjal.
`star` `color{Brown}"Perigynous"` :
● If gynoecium is situated in the `color{Violet}"centre"` and other parts of the flower are located on the rim of the thalamus almost at the `color{Violet}"same level"`, it is called `color{Violet}"perigynous"`.
● The ovary here is said to be half `color{Violet}"inferior"`.
E.g.: Plum, Rose, Peach.
`star` `color{Brown}"Epigynous"` :
● In `color{Violet}"epigynous flowers"`, the margin of thalamus grows upward `color{Violet}"enclosing"` the ovary completely and getting `color{Violet}"fused"` with it, the other parts of flower arise `color{Violet}"above"` the ovary.
●The ovary is said to be `color{Violet}"inferior"`.
● E.g.: Flowers of Guava and Cucumber, and the Ray florets of Sunflower.
● Based on Symmetry:
`star` `color{Brown}"Actinomorphic"` : When a flower can be divided into two equal radial halves in `color{Violet}"any radial plane"` passing through the centre, it is said to be `color{Violet}"actinomorphic"`
E.g.: mustard, datura, chilli.
`star` `color{Brown}"Zygomorphic"` : When it can be divided into two similar halves only in `color{Violet}"one particular vertical plane"`, it is `color{Violet}"zygomorphic"`.
E.g.: Pea, gulmohur, bean, Cassia.
`star` `color{Brown}"Asymmetric"` : A flower is `color{Violet}"asymmetric"` (irregular) if it `color{Violet}"cannot be divided"` into two similar halves by any vertical plane passing through the centre.
E.g.: Canna.
● Based on Number of floral appendages: A flower may be `color{Violet}"trimerous"`, `color{Violet}"tetramerous"` or `color{Violet}"pentamerous"` when the floral appendages are in multiple of 3, 4 or 5, respectively
● Based on presence or absence of Bract:
`star` `color{Brown}"Bract"` : The reduced leaf found at the base of the pedicel is called Bract.
`star` Flowers with bracts are called `color{Violet}"bracteate"` and those without bracts, `color{Violet}"ebracteate"`.
● Based on position of calyx, corolla and androecium in respect of the ovary on thalamus:
`star` `color{Brown}"Hypogynous"` :
● In the `color{Violet}"hypogynous"` flower the gynoecium occupies the `color{Violet}"highest"` position while the other parts are situated `color{Violet}"below"` it.
● The ovary in such flowers is said to be `color{Violet}"superior"`
.
● E.g.: Mustard, China rose and Brinjal.
`star` `color{Brown}"Perigynous"` :
● If gynoecium is situated in the `color{Violet}"centre"` and other parts of the flower are located on the rim of the thalamus almost at the `color{Violet}"same level"`, it is called `color{Violet}"perigynous"`.
● The ovary here is said to be half `color{Violet}"inferior"`.
E.g.: Plum, Rose, Peach.
`star` `color{Brown}"Epigynous"` :
● In `color{Violet}"epigynous flowers"`, the margin of thalamus grows upward `color{Violet}"enclosing"` the ovary completely and getting `color{Violet}"fused"` with it, the other parts of flower arise `color{Violet}"above"` the ovary.
●The ovary is said to be `color{Violet}"inferior"`.
● E.g.: Flowers of Guava and Cucumber, and the Ray florets of Sunflower.