Describe the arrangement of floral members in relation to their insertion on the thalamus.
The position of the calyx, corolla, and androecium in reference to the ovary on the thalamus is used to classify flowers into three categories: a) Hypogynous Flowers: The gynoecium is at the top of the flower while the rest of the whorls lie below it. Example: - Mustard, China rose, etc. b) Perigynous Flowers: The gynoecium is in the centre while the rest of the whorls of the flower are situated on the rim of the thalamus. They all lie almost at the same level. The ovary is half inferior. Example: Plum and rose. Epigynous Flowers: - The margins of the thalamus grow upwards enclosing the ovary completely. The rest of the whorls of the flower arise above the ovary. The ovary is inferior. Example: Guava, sunflower and Cucumber.
